Where do i find the Prime Lite 20.1 "user guide"

Those guides don't have much "how to use" information in them.
I can't even find how to correctly use wires, buses and their labels.

It seems the modern user guide docs are heavily based on users already knowing how to use the software, which is very bad for new users to learn.

I'm looking for depth information that used to be in the Altera published hardbooks back in the 1990's, obviously todays guides are just shortcuts and brief guides which don't help me at all.