Tub removal is fairly straight-forward for all these jeeps. Obviously my M38A1 is probably a touch simpler but I think they are all about the same.
Remove all the seats, rollbars, carpet, pedals, steering wheel (not the column), and anything else bolted to the actual tub. Make sure you bag and tag all of your bolts (trust me!)
Remove the hood, fenders, and windshield
Unbolt the dash and disconnect gauges and wires (label each wire with a piece of tape if you are re-using the original harness)
Disconnect the fuel filler tube and linkage for the parking brake
Crawl under the jeep and locate the body bolts (8 on my Jeep). Remove and save these bolts
After the tub is free from the frame, lift it up high enough to get a 2x4 under the front and rear. This will help with removal. Ratchet strap the frame to the boards and have three friends grab the corners. Lift and remove over the steering column and you're free.
I'm sure I've forgotten a couple things that the others will chime in on. Good luck!
Try this book if you're doing a rebuild. I borrowed it from and friend and its 10x the Haynes manual: