1982 300D Turbo 200k+(?)

New to this board and MB.... Am just learning to get under the hood and under the car. Have done two oil changes, replaced the air filter housing bracket, reworked my instrument cluster (all working now thanks to you all), and done a complete cooling system flush. Am now hoping to attempt some real work and need a list of proper tools such as what type of torque wrench to get, etc. I do have a standard craftsman 1/2, 3/8 and 1/4 inch wratchets and an assortment of open end wrenches.
I would like to be able to do complete 15000 mi service and fluid changes, brakes, etc.

Any help greatly appreciated!