Fundamental Blueprint Practices
Learn few basic things that will greatly improve your visual scripting
Unreal C++
Learning "Unreal C++" might be much easier than you think. It's halfway to the simplicity of custom scripting language.
Pointer Types
Overview of UObject and "Smart" pointer types in Unreal
Perceptions
Ue4 system to handle Actor perceptions like sight or hearing.
Navmesh
The Unreal Engine navigation system utilises a Nav Mesh (Navigation Mesh) to know where the walkable sections of our level are. This allows AI to do pathfinding.
Using the Asset Manager
Explanation of the purpose of the Asset Manager and tips for using it
Redirectors
Moving or renaming an asset in UE4 leaves a Redirector in its old location. This is so that packages that are not currently loaded, but reference this asset, will know where to find it in its new location.