If we want to study about an API alone; we need to use that API as an user till we got used to it and reading Header files is great.
In every unreal C++ Project, they include "CoreMinimal.h" or "EngineMinimal.h" and those header files will be key to start studying.

1. Project structure

Config	: project setting values. NEEDED-do not remove
Content	: asset storage. NEEDED-do not remove
Intermediate	: intermediate files. Recovered after remove
Saved	: save files, screenshots and etc. Not recovered after remove
in Cpp project,
Binaries	: binary files created after compile. Recovered after remove
Source	: source files. NEEDED-do not remove




If your project got something wrong and doesn't work. remove unnecessary files(files in .gitignore) and execute .uproject file.

If your project not getting better and it's clear UnreealEngine is preserving integrity, import proper Config files from new project to current project's Config folder. (you need to change project name of files to adjust instead.)




2. Type name prefix

A	: classes inherited AActor; Actors
U	: classes inherited UObject; non-actor unreal objects
S	: classes inherited SWidget; Widgets
E	: Enum
I	: Interface
T	: Template
F	: Others
b	: boolean variables; not class, only variable

Type name and variable name are noun.
Funtion name and method name are verb that describe their effct or return value(if it doesnt have effect.)

Actors are objects in level that consist game.
every actors inherit AActor.

yea
yea

Components are subobject of Actors that endow functions with Actor.

• Movement Coponent
• oho