Hello All here you go with the rails cheat sheet and other references that might help ---> http://www.ilovejackdaniels.com/cheat-s ... eat-sheet/ ---> http://www.blainekendall.com/uploads/Ru ... endall.pdf ---> http://topfunky.com/clients/rails/ruby_ ... rtions.pdf ---> http://www.scottklarr.com/topic/104/rub ... at-sheets/ ---> http://www.rorsecurity.info/ruby-on-rai ... heatsheet/ ---> http://garrettsnider.backpackit.com/pub/367902 (Rails Migration Cheat Sheet) ---> http://www.threaded.com/rails_cheatsheet.htm (Threadeds Ruby on Rails Cheat Sheet) ---> http://kpumuk.info/internet/ruby-on-rai ... at-sheets/ ---> http://labnotes.org/svn/public/ruby/rai ... select.pdf --> http://errtheblog.com/ (Please take out some time to do blogging as it helps you explore the depth of your knowledge and know different ways to doing things) Like they have mentioned captch implementation without the need to install imagemagic or rmagic using captchator here is the link: "http://errtheblog.com/posts/43-captchator-on-rails"