- Download Ruby and install
- Check ruby installation: ruby -e "puts 1+1" -> 2
- irb - for interactive ruby commands
- Download devkit for corresponding ruby version and extract to c:\devkit
- Browse to c:\devkit and run this: ruby dk.rb init
- type config.yml to see the location of all installed ruby version
- Run ruby dk.rb install
- gem install json --platform=ruby
- check installation by running: ruby -rubygems -e "require 'json'; puts JSON.load('[42]').inspect"
- gem -v
- which gem
- gem list
- gem update --system -> to update all gems
- gem install rails --version 4.0.0 --no-ri --no-rdoc or gem install rails -> for latest version