The Definitive Guide to Yii 2.0 contains the detailed description of how to use
Yii 2.0 php framework
Yii is a free, open-source Web application development framework written in PHP5 that promotes clean, DRY design and encourages rapid development. It works to streamline your application development and helps to ensure an extremely efficient, extensible, and maintainable end product.
-Improved Yii 2.0 guide list and there details.
-Yii Framework 2.0 API Documentation.
-Active Reference Url.