You will never remember everything you are told, but by living with the coach and using as many of the systems as possible you will be way ahead of the game.
We try to give this advice to every single new coach buyer. Many are called, yet few heed.
It is way too tempting to crank that new baby up and get on the road...but what can happen is that a new coach will develop some surprises which are far more complicated to diagnose and fix if you're stuck in the boonies without hands-on support.
Imagine what trouble you could be in with a Tech-Link Marathon in say, Oklahoma, in a coach requiring the October recall and it won't start at all?
So, try to rein in your enthusiasm to hit the road and be as sure as you can that each and every system is exercised and worked (including heaters even if it is HOT outside, before making diesel smoke.
You'll be glad you did.