We currently have these 3 tutorials for UnrealEngine and TexturePacker.Tutorials for other frameworks are available from the tutorials list.
Free Tutorial: Learn how to create sprite sheets and flipbook animations for UnrealEngine/Paper2D using TexturePacker
This tutorial explains the most used sprite sheet types and how you can easily create a sprite sheet from a single of images. Links to free software included.
Tutorial: Create sprite sheets for your normal mapped sprites.