Read the Rails Guides (<a href="http://guides.rubyonrails.org/" rel="nofollow">http://guides.rubyonrails.org/</a>) and check out the Rails from Scratch series on Peepcode (<a href="http://peepcode.com/products/rails-from-scratch-part-i" rel="nofollow">http://peepcode.com/products/rails-from-scratch-part-i</a>) -- they both got me up to speed pretty quickly.