Yeah, in a game like this you really need to have at least all the flight mechanics explained properly.
Stuff like jumping in and out of supercruise for example, is the sort of thing they need to explain. You can't just use it on and off. To "safely" leave supercruise you have to have a target and wait until your ship auto slows down enough until it gets VERY close, then a message appears saying it is safe to exit supercruise.
All these little really important aspects to travelling are completely left up to you to discover yourself, which I think is a bit of an oversight.