Look into blueprint interfaces. Doing what you want should maybe take 2 minutes. 4 minutes max.
The problem is that there’s is no community - and that the Wiki was deleted.
Given that, everyone learning should consider buying a book.
Which book, I have no idea at this point.
The engine changes so much (in a disastrous fashion) that writing a book in print is prettymuch pointless for anyone writing.
You’d need to spend your life writing corrections…