Falk Köppe


  • 7 Courses Completed
  • 23 Levels Completed
  • 0 Screencasts Watched
  • 66,250 Total Points

Achievement Badges

Ruby: 3 Courses Completed


Rails for Zombies



Rails Best Practices


  • 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


Try Ruby

Getting Started With Ruby on Rails

Learn the basic building blocks of Ruby, all in the browser.

  • All For One, One For All

    Get an introduction to numbers, Strings, properties, and methods.

  • There Are Always Two

    Learn about conversions, arrays, variables, and more methods.

  • Third Time's The Charm

    Review printing, brackets, and String manipulation.

  • Fourth and Short

    Take a shot at method chaining, hashes, keys, and values.

  • The Highest of Fives

    Study up on blocks, directories, and method arguments.

  • Sixth Sense

    Start building methods, libraries, popups, and HTML with Ruby.

JavaScript: 2 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.

  • Fasten your Seatbelts

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


Try jQuery


Learn the basics of jQuery 2.0, a JavaScript library, to modify elements on the page and improve user interaction.

  • Introduction to jQuery

    A gentle introduction to what jQuery is, and what it can do.

  • Traversing the DOM

    Search & walk through the DOM with selectors and traversing.

  • Working with the DOM

    Add & remove from the DOM, more traversing, and user events.

  • Listening to DOM Events

    Listen for events, handle them, and change the default event behavior of web browsers.

  • Styling

    Before landing, tame CSS with jQuery and animate elements on the page.

HTML/CSS: 1 Course Completed

  • 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

  • Footer & Forms

    Learn about new form elements and build a functional footer

Git: 1 Course 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.

  • Discover Git

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