Colorado Game Coders
Unity Game Coding Using C# - Volume 1 by Michael L. Croswell is in the review stage and will soon be on the Unity Asset Store.
You can find the free chapter, support material, and video(s) at the support page and the book online discussion at the forum.
Demo From Chapter 10: 2D_Platformer - Boned Character
Demo From Chapter 10: 2D_Platformer - Sprite Character