We currently have these 7 tutorials for Unity and TexturePacker.
Tutorials for other frameworks are available from the tutorials list.
Optimizing sprite sheets for Unity
This tutorial shows you how to use optimized sprite sheets with Unity
How to create a 2d game scene in Unity (Part 1)
This tutorial shows you how to create a 2d game scene with a background and a character sprite animation. Use sprite sheets to optimise the game performance.
How to create dynamically lit 2d pixel art scenes with Unity
Tutorial: This video shows you how create dynamic light effects for your pixel art scene in Unity using normal maps created with SpriteIlluminator.
Optimizing sprite meshes for Unity
Optimize Unity sprite meshes to increase your game's performance
2d dynamic lighting tutorial for Unity
Tutorial: Create amazing 2d lighting effects for your unity game using normal mapped sprites.
These are more general tutorials with information about sprites, sprite sheets, performance and rendering quality: