When I had my Jeep, I made a maintenance binder. I found illustrated write ups for transmission, differential, and brake service. I had all of the fluids, fluid levels, light bulb model numbers, filter model numbers, etc..... If I did anything to my Jeep, it was documented in my binder. That way you can't forget what you learned. I also managed to find a factory interactive FSM. If I needed wiring diagrams or installation instructions, I just printed it out and followed it. I could keep the print out or throw it away. I miss that Jeep.