The three most basic UDK uc: GameInfo, Pawn, Controller.
About cameras:
Official Camera technical documents
One example of Camera has the advantage that most online tutorials are inherited from UTPawn, which is inherited directly from GamePawn.
About roles:
Actor Component
Official role technical documentation
How to Create a modular pawn is very useful for reference if a character model head, hair style, and body are separated.
Actor Tick Mechanism
Animation:
AnimTree Editor
UnrealEngine animation System Overview
AnimationNodes
PhysicalAnimation
AnimTree Course Wraiyth's AnimTree crash course
Uc Editor:
Unreal X-Editor needs to flip the wall, the interface is good, some features are very convenient, need. NET 3.5
UnrealScript
UnrealScript workflow must be read by uc
Simulated keyword
Expression
String
User input:
KeyBinds
ExecFunctions
Mouse Interface
Lelecommand:
Cmd Daquan
Command-line parameters
Physical:
Unreal & physx Home
Physics Asset Tool User Guild