Here is a step by step To-Do list for Yii beginners. The list is an advice of what tutorials and documentation you can walk through to get a full understanding of the Yii Framework. These can be a help to learn Yii.
When building PHP web applications you usually have to take care about defining and providing a consistent development and production environment for your team. This includes your application packages, PHP-extensions, database servers and often further components such as a mail server or workers.
One of the common requests I see in the forum is how to implement RBAC. While you can implement Yii 2's built-in RBAC, that might be too much for developers who are just starting with Yii 2 or have simpler needs. Sometimes you are looking for a fast solution and just want two flavors, user and admin. And even if you will eventually need more, you can use these methods as a starting point for developing your own features or move on to Yii 2's RBAC.
Sometimes we get lost trying to search by a HAS_MANY relation using CActiveRecord or CActiveDataProvider in Yii 1.1. This article is a series of drills that try to describe the practical techniques of searching by a HAS_MANY relation.