Nope. No mention of the existence of a flight manual
Oh dear... That's worrisome! You'd read the instruction manual before you operated any other complex machine... Reading, or at least being aware of the existence of the flight manual, would be a good idea, and should be being trained. It'll tell you some important things, the most important of which is the limitations imposed on the operation of the aircraft - so you know not to exceed them! Otherwise, procedures for emergency and normal operation, as well as weight and balance, and performance information will be there. And, a detailed description of the systems of the aircraft, to help you make a good decision when something isn't working properly. Yes, your instructor should be "covering this" for you in the beginning of your learning, but you still should be aware!
Just 'cause I'm curious, what aircraft model and year have you been flying DB?