https://cloud.blender.org/p/weight-painting/  

This course is an introduction to weight painting in Blender. It goes through all the most useful tools and concepts you will need in order to be able to start efficiently deforming your characters. It also focuses on understanding and working around common pitfalls and confusing aspects of weight painting. If you've never tried weight painting before, or have tried but found it confusing or difficult, this is the course for you.

Part 1-2-3 | Project Files | 133 MB