Most of your Rails 2.3 knowledge will still be good, but I would suggest developing your new app using Rails 3 if possible. I'll be working on the Rails 3 versi

Most of your Rails 2.3 knowledge will still be good, but I would suggest developing your new app using Rails 3 if possible. I'll be working on the Rails 3 version of the tutorial over the next few weeks; keep your eyes peeled for an announcement when it's ready.