DCS is quite like that, in that if you want to learn the systems there are some decent lessons for some planes but none of them cover things like BFM or (server!) etiquette. Luckily there is a thriving online community to help you learn the ropes, although it is rather annoying sometimes to be just fumbling around.
The F-14's AI RIO "Jester" can actually guide you through startup, which is very cool
The F-14's AI RIO "Jester" can actually guide you through startup, which is very cool