Not a game that really requires reading up on, other than perhaps (barely spoilers):
- The Volition skill (part of the Psyche tree) gives you your morale, and the Endurance skill (part of the Endurance Tree) gives you your physical hit points. So if you have either extremely low, it can lead to unexpected “game overs.”
- Lots of ways to accomplish most anything in this game, so don’t obsess endlessly over an apparent dead end. Go explore, pursue other directions.
- Set aside the RPG convention that you ought to say everything/ask every question that is suggested as a dialogue option. If something feels out of character or a bad tack to take, don’t do it.