I'm in the process of learning Unreal myself. It seemed like a good idea to share things that I found less obvious, hard to figure out, and/or important to me. I'm doing this now because its easier to provide details someone who knows things thoroughly could easily forget to add while I'm still learning them.
If the notes get big enough, I'll probably break it into formal courses.
The first area I'm looking at is building levels using the tools already in Unreal. I'm sure these notes will drift all over, but hopefully, it will also help you avoid potential frustrations as well.
I'm setting up the forum in this course.
There you can ask any questions, make suggestions, give additional tips, tell me if something is unclear, etc.