Belated welcome, zzztritan.
Yes, much of the info on AFKMud may seem dated, but it's generally relevant. The partial switch to c++ didn't alter the way most of the command work.
The overland system is entirely optional, the only reason the initial Admin login goes there is to make people aware the system exists - perhaps spark that "hey, this actually *IS* cool" feeling. But you don't need to take advantage of it if you don't want to. Areas will link up like normal. There's also a random encounter system built in, but it will need to be filled in with mobs you want to apply there.
The help system thing is probably a byproduct of the conversion of the help system to using c++ std::string and then forgetting that std::string is case sensitive. Oops.
It's an easy fix and one I really otta do just so that's out of the way. Perhaps when I finally get around to incorporating those fixes to the line editor I'll fix the help part too.