If you're looking for a mammoth Rails 3 link list, then check out the RubyInside blog.
- Green-fielding new apps with the Rails 3 beta - Excellent tutorial to Rails 3 using a blog application for examples.
- Signed and Permanent cookies in Rails 3 - Makes remembering users all the much easier.
- The Building Blocks of Ruby - Why Ruby blocks are better!
- jQuery with Rails 3 - Good intro for plugging in jQuery.
- Scope a variable to a block in your template code - That's a new one to me! Thanks Ryan.