Robert Curth


  • 27 Courses Completed
  • 17 Screencasts Watched
  • 350,050 Total Points

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Achievement Badges

Ruby: 10 Courses Completed


Rails Best Practices

Learn Rails best practices with the most useful Rails patterns and techniques. If you're a Rails developer, consider this your new Rails programming playbook.

  • Controllers in Space

    Fat model/skinny controller, named scopes, scopes with lambda, default scopes, model creation scopes, skipping a filter

  • Controller Command

    Nested attributes, models without the database, using Presenters, rejecting SQL injection, Rails 3 responder syntax

  • Model Pitfalls

    Basic & compound indices, protecting your attributes, using default database values, using callbacks properly, improving validation, database seeding

  • Model Bert

    Optimizing n+1 queries, using counter_cache, batches of find_each, applying The Law of Demeter, using to_s and to_param in the model

  • Froggy Views

    Refactoring views, using helpers, rendering content with partials, handling empty strings, using content_for, meta yield


Rails for Zombies 2

Getting Started With Ruby on Rails

Learn more Rails with this sequel to the infamous Rails for Zombies course. Increase your Ruby on Rails knowledge with even more zombie learning.

  • From the Ground Up

    Installing Rails, creating a Rails app, database migrations, the command line, Ruby 1.9 hash syntax, Bundler, database configuration

  • Models Still Taste Like Chicken

    Named scopes, callbacks, has_one, relationship options, using Includes, has_many :through

  • Rest In Pieces

    Revisiting URL helpers, forms & input helpers, understanding REST, nested resources, view partials, other view helpers

  • Asset Packaging and Mailing

    Sending attachments in mail, asset tags, using the Asset Pipeline, CoffeeScript, creating and sending mail, SCSS, using the JavaScript manifest

  • Rendering Extremities

    Custom RESTful routes, creating AJAX links, rendering custom JSON, AJAXified forms, controller rendering options, sending server JavaScript, using JSON data


Rails Testing for Zombies

Rails Testing

Learn Rails testing for your applications with these testing fundamentals. Brush up on testing best practices with Rails Testing for Zombies.

  • Test Unit

    Testing philosophies, overview of Test Unit, TDD (Test Driven Development), and using assertions

  • Model Testing

    Preparing the database, running tests, using fixtures, and testing relationships

  • Cleaning it up

    Writing custom assertions, using Test Helper, and introducing Shoulda

  • Mocks and Stubs

    Understanding and using mocks and stubs with Mocha

  • Integration Tests

    Rails integration commands, integration testing with Capybara, and writing and using helper methods

  • Using Factories

    Creating factories, adding associations between factories, and implementing factories in your tests


Testing with RSpec

Rails Testing

Learn to use this trusted testing framework for Ruby applications. Brush up on testing best practices with our Testing with RSpec course.

  • Introduction

    An overview of RSpecs basic syntax and installation.

  • Configuration & Matchers

    Setting up RSpec in a Ruby or Rails project and digging into some RSpec Matchers.

  • DRY Specs

    See how to organize your specs better making readability much easier.

  • Hooks & Tags

    Before hooks, shared examples and RSpecs use of metadata.

  • Mocks & Stubs

    A tour through how RSpec uses mocks and stubs.

  • Custom Matchers

    Walkthough the creation of a custom matcher from scratch.


Ruby Bits

Ruby Language

Learn the core bits every Ruby programmer should know. This Ruby tutorial builds upon the basics to keep enhancing your Ruby knowledge.

  • Expressions

    An overview of best practices for writing expressions in Ruby

  • Methods and Classes

    passing optional arguments, raising exceptions, using begin/rescue/end, attr_accessor vs. attr_reader

  • Classes

    Encapsulation, instance & private methods, inheritance, and refactoring

  • ActiveSupport

    Helpers that are built on top of the Ruby Language (arrays, dates, hashes, numbers, and strings

  • Modules

    Namespacing methods, Mixins vs. class inheritance, method hooks, ActiveSupport::Concern

  • Blocks

    Iterating and yielding, passing arguments, returning variables, Enumerable, and refactoring


Ruby Bits Part 2

Ruby Language

Learn the more advanced bits every Ruby programmer should know. This advanced Ruby tutorial will help you take your Ruby knowledge to the next level.

  • Blocks, Procs & Lambdas

    An advanced look at code blocks and how to use procs and lambdas to encapsulate blocks of code

  • Dynamic Classes & Methods

    Techniques for defining, finding, and calling methods dynamically at runtime

  • Understanding Self

    A look at how Ruby uses the value of self and how to change self as your program executes

  • Missing Methods

    Using method_missing to capture, delegate, and respond to methods that don't exist

  • DSL Part 1

    A brief intro to writing Domain Specific Languages in Ruby

  • DSL Part 2

    More advanced tips and techniques for writing DSLs


Rails 4: Zombie Outlaws

Intermediate Ruby on Rails

Learn to build faster and more secure web apps with Rails 4. Review the Rails updates that will help get your apps up to speed on Rails 4 best practices.

  • A Bloody Tale of Revenge

    Support for Ruby 1.9.3, ThreadSafety, and Routes

  • The Hangman's Daughter

    Changes to the ActiveRecord API, and more on ActiveRecord and changes to ActiveModel

  • Dead Man Walking

    Whitelisting user parameters with Strong Parameters and using Remote Forms. Reviewing new syntax for controller Filters, working with Session & setting Custom Flash Types

  • Concerning the Events of Santa Maria

    Reviewing new view helpers & the Ruby template handler

  • The Killing Fields

    Learning the new test structure

  • The Undead Express

    Declarative ETags, the new Dalli memcache client, and working with Cache Digests

  • Why's and Wherefores

    Streaming with ActionController::Live and faster page loading with Turbolinks


Rails for Zombies Redux

Getting Started With Ruby on Rails

Learn Ruby on Rails, an open-source framework for the Ruby programming language. Rails for Zombies will teach you all the Rails basics with a zombie flair.

  • Deep in the Crud

    How we work with a database in Rails by using Create, Read, Update, and Destroy (CRUD).

  • Models Taste Like Chicken

    We'll learn about ActiveRecord models, validations, and relationships.

  • The Views Ain't Always Pretty

    Get experience linking between views, using conditionals, and how to lookup documentation on common view helpers.

  • Controllers Must Be Eaten

    Sitting between our Models and Views are the Controllers, which use instance variables to keep our code organized.

  • Routing Into Darkness

    Learn how to direct requests to your app to the correct controller actions.


Rails 4 Patterns

Intermediate Ruby on Rails

Learn helpful patterns and techniques for building and maintaining complex Rails applications. Make your application easily scale in size and complexity.

  • Models

    Use Models to encapsulate core business logic and avoid common ActiveRecord pitfalls.

  • Scopes and Class Methods

    Learn the intricacies of using class methods that run queries, and learn the benefits of using scopes.

  • Concerns

    Review how to extract reusable code into Model and Controller concerns.

  • Decorators

    Extract view logic out of Models with Decorators.

  • ActiveModelSerializers 1

    The basics of using ActiveModelSerializers to build a JSON API.

  • ActiveModelSerializers 2

    Use ActiveModelSerializers to simplify your JSON API.

  • FineTuning

    Speed up queries, secure user parameters and manage your processes.


Rails for Zombies


Ruby: 7 Screencasts Watched

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Guard and Spork



Rails Anatomy

Asset Pipeline Patterns

RubyTapas: Break With Value

JavaScript: 6 Courses Completed

  • Just Enough JavaScript

    Creating variables, dialogs, object & string functions, number-related operations, working with arrays.

  • Take Off

    Downloading jQuery, minified Javascript, loading jQuery, the DOM & jQuery selection, nested elements, pseudo-classes & direct descendants.

  • View from 30,000 Feet

    Direct manipulation with CSS, manipulating multiple attributes, adding & removing classes, toggling classes, hiding & showing content.

  • Contents may shift

    Retrieving & setting text content with text(), querying & setting DOM with html(), manipulating DOM with append() & prepend(), creating peers with :before & :after, adding & removing nodes.

  • Placeholder Completion Badge

    Fasten your Seatbelts

    Using document.ready, writing named functions, using click event listeners, keyboard events, animations, AJAX load()




Learn CoffeeScript, the powerful little language that compiles into JavaScript. Take a sip of our CoffeeScript tutorial & learn to get more done with less code.

  • Variables and Functions

    An overview of variables and functions

  • Applied jQuery

    Converting jQuery to CoffeeScript

  • Conditionals & Operators

    Conditionals, chained comparisons, switch cases, and existential operators

  • Arrays, Objects, Iterations

    Using arrays, object literals, loops, list comprehension, and splat arguments

  • Applied jQuery II

    Understanding and using jQuery object notation

  • Object Orientation

    Classes, class inheritance, property arguments


jQuery Air: Captain's Log

Learn jQuery best practices & useful techniques of jQuery's efficient JavaScript library. Let jQuery Air: Captain's Log help you make the most of your code.

  • Events

    HTML & Text value, HTML5 data attributes, click events, binding & unbinding events, using multiple click handlers, live vs. delegate

  • Ajax

    $.ajax, error handling & callbacks, aborting AJAX & timeouts, receiving and parsing JSON, using JSONP, sending form data

  • Effects

    Chaining effects & adjusting speed, animating with CSS, effect easing, using a queue, adding a delay, stopping an effect

  • Placeholder Completion Badge


    Each & Map utility functions, creating your own utility functions, creating plugins, encapsulating your code, custom events, jQuery templates


Anatomy of Backbone.js

Client-side Frameworks

Learn Backbone.js and start building sophisticated and structured web apps. Try out Backbone’s JavaScript library with a RESTful JSON interface.

  • Introduction

    Learn the very basic of Models and Views.

  • Models

    More on Models, such as syncing to/from the server.

  • Views

    View events, templates, and customization.

  • Models & Views

    More on how Models and Views work together with event binding.

  • Collections

    Working with a set of models with Backbone Collections.

  • Collection Views

    Displaying a Collection with a Collection View.

  • Router & History

    Supporting pushState history and multiple URLs.


Real-time Web with Node.js

Server-side Frameworks

Learn Node.js and start building lightweight, real-time applications. Our interactive course will teach you the fast and scalable perks of Node.js. This course has been updated to teach Node ~0.10.x and Express ~4.9.

  • Intro to Node.js

    An overview of Node.js, blocking vs. non-blocking code, reading files, issuing requests

  • Events

    Event emitters, event requests, event listening

  • Streams

    Reading, writing, piping, solving backpressure

  • Modules

    Exporting, npm installing, dependencies, and semantic versioning

  • Express

    Routes, rendering, layouts, url building, express servers


    Listening for, broadcasting, and answering questions, saving client data

  • Persisting Data

    Redis, working with lists, persisting, emitting, and limiting questions


jQuery: The Return Flight


Learn Ajax and add more interactivity to your projects. Discover how to organize your code using jQuery Plugins and Promises.

  • Ajax Basics

    Learn what Ajax is and how it can be used.

  • JavaScript and jQuery

    Organize your jQuery and JavaScript.

  • Ajax With Forms

    Learn about how to send data to the server and work with JSON.

  • Utility Methods

    Learn about some handy utility methods including $.each and $.map while working with complicated JSON data.

  • jQuery Plugins

    Create your own reusable jQuery plugin.

  • Promises

    Use promises to make your Ajax calls reusable and organized.

JavaScript: 3 Screencasts Watched

Knockout.js - Part 1

Testing CoffeeScript with Jasmine

AngularJS - Part 1

HTML/CSS: 6 Courses Completed


Functional HTML5 & CSS3

Learn to build functional sites with HTML5 & CSS3. Watch design video tutorials and take programming challenges with our Functional HTML5 & CSS3 course.

  • HTML5

    Learn about the new tags in HTML5

  • CSS3

    Review the new properties in CSS3

  • Header & Navigation

    Build a functional header and navigation area

  • Content

    Develop the content sections of a site

  • Placeholder Completion Badge

    Footer & Forms

    Learn about new form elements and build a functional footer


CSS Cross-Country

Intermediate CSS

Learn the fundamentals & foundational elements of CSS with CSS Cross-Country. Review all the web-styling necessities for front-end efficiency.

  • Frost-Proof Fundamentals

    Adding style, selectors, the cascade, and floats

  • Clear Carving

    Clearing floats, inheritance, and specificity

  • Box Bindings

    The box model, positioning, and z-index

  • Grooming Your Code

    DRY, display types, and centering

  • CSS Safety

    Protecting your layout and specificity problems

  • Image Issues

    Image use and image cropping

  • Sprightly Slaloms

    Image replacement and sprites

  • Pseudo Sitzmark

    Pseudo classes and pseudo elements


Journey Into Mobile

Intermediate CSS

Learn mobile web design with mobile-first, adaptive, and responsive web design concepts. Review the best practices with our Journey into Mobile course.

  • Foundations for Mobile

    The mobile web and relative font-sizing

  • Fluid Layouts

    Learn the foundations for creating scalable, fluid sites

  • Adaptive Adventures

    Create sites that adapt to a specific context

  • Responsive Adventures

    Create device-agnostic sites optimized for all viewports

  • Responsive Media

    Learn how to scale images, video, and work with retina graphics


Assembling Sass

CSS Preprocessors

Learn Sass and start improving your front-end CSS workflow. Try Sass on large-scale applications for efficient, time-saving styling.

  • Foundation

    An introduction to Sass, imports, comments, and nesting.

  • Variable

    Creation and use of recallable information.

  • Mixin

    Writing reusable styles mixed with optional arguments.

  • Extend

    Easily manage CSS class reuse and inheritance in the stylesheet, rather than HTML.

  • Directive

    A primer on the programmatic tools in Sass, including functions and each loops.

  • Math + Color

    Perform arithmetic and color alterations directly to stylesheet values.

  • Responsive

    Simplify and optimize your responsive design workflow via Sass.


Assembling Sass Part 2

CSS Preprocessors

Learn advanced Sass & Compass for further improving your front-end CSS workflow. Revolutionize your front-end efficiencies with these coding techniques.

  • More Sass

    A deeper dive into core Sass functionality

  • Compass

    Introducing the Compass add-on and enabling its use

  • Utility

    Traversing helpers and utilities included with Compass

  • Rhythm

    Establishing and maintaining baseline grids with the vertical rhythm module

  • Sprite

    Relegating sprite generation and maintenance to the sprite module


Fundamentals of Design


Improve the visual competency of any website or application by keeping design in mind. Learn the fundamental design principles of typography, color, and layout.

  • Typography

    Learn to recognize beautiful and functional type.

  • Colors

    Review color theory and application principles.

  • Layout

    Familiarize yourself with visual hierarchy and balance.

HTML/CSS: 1 Screencast Watched

Responsive Web with Initializr

Git: 3 Courses Completed


Try Git


Learn how to use Git by reviewing the basic concepts of Git version control. Try out this introductory course that was created with GitHub.

  • Placeholder Completion Badge

    Discover Git

    Discover the basics of Git, including how to initialize a repo. Learn how to add, commit, and push your code to GitHub.


Git Real


Learn more advanced Git by practicing the concepts of Git version control. Increase your Git knowledge by learning more advanced systems within Git.

  • Introduction

    Learn the basics of Git

  • Staging & Remotes

    Add and remove changed files, and work with remote repositories

  • Cloning & Branching

    Clone repositories and learn how to work with multiple branches

  • Collaboration Basics

    Work simultaneously with multiple users

  • Branching

    Work with remote branches and reference commits

  • Rebase belong to us

    Optimize merging and fix merge conflicts

  • History and Configuration

    Learn how to configure and view commit logs


Git Real 2


Learn advanced Git by practicing Git version control with Git Real 2. Continue to increase your Git skills by learning more advanced systems within Git.

  • Interactive Rebase

    Edit your commits through the use of interactive rebase

  • Stashing

    Not quite ready to commit? Git stash is the perfect solution

  • Purging History

    Accidentally commit something sensitive? Purge it!

  • Working together

    Make Git work together on multiple operating systems

  • Submodules

    Ever wanted to use another repository inside of another?

  • Reflog

    Undo almost anything and find lost commits using reflog

Electives: 1 Course Completed


Discover DevTools


Learn how Chrome DevTools can sharpen your dev process and discover the tools that can optimize your workflow and make life easier.

  • Elements

    Dig into the elements panel, learn how to make changes to the DOM and update styles.

  • Sources

    New workflows to speed up your development time.

  • Console

    Review the DevTools console and learn how to examine exceptions and use timesaving shortcuts.

  • Debugging

    Great workflows for debugging problems in your JavaScript.

  • Network

    Speed up your network interactions using the network tab and the page speed extension.

  • Profiles

    Get familar with your applications rendering performance and learn how to use CPU profiling to identity performance problems.

  • Memory

    Learn how to find and identify memory leaks in your application.

Electives: 5 Screencasts Watched

Skitch & Jing

Secrets of Keynote - Part 1

Secrets of Keynote - Part 2

Shell Productivity - Part 1

Getting Started with Clojure - Part 1

iOS: 1 Course Completed


Try Objective-C

Objective-C Language

Learn the basics of iOS development with the Objective-C language. Start learning to develop iPhone, iPad, and Mac apps by building a foundation on Objective-C.

  • Grass World

    Create and log common objects

  • Ice World

    Sending messages and getting results

  • Sand World

    Control the flow

  • Lava World

    Create your own classes

  • Space World

    Learning from mistakes

iOS: 1 Screencast Watched

iOS Categories