Rails3 is moving really fast. Updates from books or blog entry is not sufficient enough to keep up with the changes that is happening in Rails3. So I would suggest follow Rails in Github instead, although it might seem scary but I found it much more effective.
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Rails3 的发展速度非常快。书籍或博客条目的更新不足以跟上 Rails3 中发生的变化。所以我建议改为关注 Github 中的 Rails，虽然它可能看起来很可怕，但我发现它更有效。
Rails3 is moving really fast. Updates from books or blog entry is not sufficient enough to keep up with the changes that is happening in Rails3. So I would suggest follow Rails in Github instead, although it might seem scary but I found it much more effective.
有关 Rails 3 的文章 - Yehuda Katz 的博客
articles about Rails 3 - Yehuda Katz's blog
Rails 3 实际应用 看起来是一个不错的起点。有早期访问版本可用。
Rails 3 in Action looks like a good place to start. There is an early access edition available.
这对 1.9 有帮助
http://www.youtube.com/watch?v=oEkJvvGEtB4
This is helpful for 1.9
http://www.youtube.com/watch?v=oEkJvvGEtB4
我从 Rails 各个方面的变更日志中获取信息。
The changelogs for the respective facets of Rails is where I get my information from.