How to learn LibGDX?

Hey guys, I like to program in Java (hence why I’m here). So I already know a good amount about Java.

Creating a platformer game has been a long time dream of mine. I’m not looking to do anything completely fancy, I just want to create a base and be able to slowly improve on it overtime.

But a large part of me isn’t understanding LibGDX, and the Dermetfan tutorial series on YouTube doesn’t really help me learn.

What’s a good way to learn how to develop with LibGDX?