i guess the thread you are talking about is:
Is it just so nooby everyone facepalmed?
lol, not the question, but the way your post is writen. overnoobing yourself is… well, no the best to introduce yourself 
I don’t know in someway, UE4 community seems less noob friendly than unity. I agree. aka “RTFM”
(my feeling is that most of the time, what is attended is that you prove that you have tried to solve your problem by yourself first, before coming to ask someone to do it for you)
and yep to me it wasn’t worth mentionning the official doc (you should do it by yourself “RTFM^^” if it’s what you are looking for sorry; and else, if you need more specific, I’m not expert in landscaping and environnement enough to help you):