Also, don't forget the "Definitive Guide to Yii". I found that after I started developing my app (basing all of the code on the blog tutorial), most of the things I got stuck on were further explained in the Guide.
Also, don't forget to contribute your questions/suggestions to the community - it will only become more robust with more people banging away at it...
http://www.yiiframework.com/doc/guide/
an ongoing, and up-to-date wiki article on this subject can be found here:
http://www.yiiframework.com/wiki/268/how-to-learn-yii
