A digital camera and some lights on stands to make really good photos are your best friends. Also, write notes on paper tags or tape and attach them to the parts so they show up in the photos. In the old days we had to rely on drawings and memory. We have it so easy today with digital photos. I recommend getting a camera that you don't mind getting dirty because sometimes your hands are going to be filthy when you pick up the camera to take a picture of something. Regularly email those photos between 2 of your email accounts or do some other kind of back-up so you don't loose the photos.
If you have an oxygen/acetylene or MAP gas/oxygen torch that you can use to heat up fasteners it will help a great deal with loosening stuck nuts and bolts. Without heating them, a lot of nut and bolt heads will round off or break. Heating them to just shy of Red, then letting them cool a bit loosens them so they come right out. Just be sure there is no gas or oil in the area. Keep a bucket of water with a wet rag, and a fire extinguisher handy just in case.
Buy a good tap and die set or "thread chaser" so you can clean up the threads on everything! It's impossible to know how well a fastener is torqued unless you have clean, smooth, and lightly lubricated threads. I often take an assembly off the car in pieces, then reassemble it and set it aside until I'm ready to do a thorough cleaning and restoration to it. Cleaning up the threads as you are reassembling it for the first time makes life a lot easier.
Good luck and keep us updated,