Which Unreal Engine 4 game engine will you be using for your next project?
4.1.1 How to upgrade an existing game engine to 4.0, 4.2, or 4.3, using this tutorial article 4 1.
Introduction to the Unreal Engine article 2.
Getting Started with the Unreal 3 Engine article 3.
Using the Unreal Editor article 4 4.
The Unreal 4 Editor article