The UMG Slate Compendium teaches the basics of UMG & Slate and provides a base understanding of how to work with Unreal Engine’s UI framework.
Topics
Rewinding a networked game
Implementing Instant Replays (Killcam)
The Unreal Engine Game Framework: From init main() to BeginPlay
Game UI Database
Unreal Engine Network Compendium
UMG Layout Techniques for Unreal Engine
How to make tools in Unreal Engine
Fast Render Target Rendering in Unreal Engine