A few pointers I can think of ....
1: Never take apart both sides at once. Always keep the opposite side together to use as a road map for reassembly.
2: Replace everything at one time. You are dealing with decades of wear and corrosion. Don't cheap out and only replace a few hydraulic items, do them all. Return springs should be all new.
3: Use the proper puller for the rear hubs. Any other puller than the three or 5 legged bolt to the studs and hammer on the cross bar type of puller will only frustrate you.
4: Make sure you take your adjusters apart, clean , relube, and reassemble properly. Before installing the drum the first time back them off all the way.
There is no online step by step that I know of. However there are lots of posts in all the different jeep forums dealing with hub removal, wheel bearing lubrication and adjustment, and brake adjustment. You might have to do a little more specific Googling for the posts.
Good luck, and keep the new shoes clean!