1. Make sure you have the Java JDK installed.
   • Windows, you can get the JDK here
   • Linux, make sure you install the official Oracle JDK, not gcj
   • OS X you are all set
2. Download Eclipse, get the latest version (3.6.1 Helios), and the “For Java Developers” or “Classic” editions
3. Installing the Android SDK, follow steps 2, 3, 4

Windows

• Ruby installer for Windows, get the latest 1.8.7 version, patch level 330. Do not get 1.9.2.
• Follow along here: Installing Rails in Windows to
  • Update your gems:

     gem update --system 

  • Install SQLite3: the command line shell and the Windows DLL
  • Install Ruby SQLite3 connector:

     gem install sqlite3-ruby 

  • Install Rails:

     gem install rails 

OS X

• Overview we are inspired by: Setting up Rails on OS X
  • Install XCode (gigantic download from Apple)
  • Install homebrew
  • Install RVM:

     bash < <( curl http://rvm.beginrescueend.com/releases/rvm-install-head ) 

  • Install Ruby 1.8.7:

     rvm install 1.8.7 

  • Create a gemset with RVM for Rails:

     rvm use –create 1.8.7@rails3 

  • Install Rails:

     gem install rails 

  • Don't install Passenger

• Heroku Quick Start Guide
• RVM, the Ruby Version Manager