This is a great course to get started with.

mooha9135

This is a specialized Unreal C++ programming course taken by professionals in large companies. 
We will teach you the basics of Unreal C++ that Unreal Engine programmers must know before developing a game.

ideugu

Lee Deuk-woo's Unreal Programming Part 1 - Understanding Unreal C++

입문

초급

중급이상

언리얼-c-plus-plus

Unreal C++

언리얼 엔진

Unreal Engine

Introduction to the course

Understanding Unreal Objects

Unreal C++ Modern Object-Oriented Design

Data structures and memory management in Unreal Engine

Assets and build system in Unreal Project