Rails
http://www.rubyonrails.org/show/HomePage

How to make a todo list program with Ruby on Rails
http://darkhost.mine.nu:8080/~vince/rails/tutorial.html

Network and Web Classes
http://www.ruby-doc.org/docs/ruby-doc-bundle/ProgrammingRuby/book/lib_network.html

Ruby Standard Library:
http://www.ruby-doc.org/stdlib/

Net::SSH:
http://net-ssh.rubyforge.org/
http://net-ssh.rubyforge.org/api