First, welcome to CHR and we look forward to seeing your project as it goes along! It's great to see younger guys/gals interested in fending for themselves and making things work.

For me it would depend on how much stuff is unhooked and hanging, and how easy it is to sort out the intended function of each wire group that is loose. If you're just dealing with the original F-1 wiring, and looking at getting the ignition switch functional you should be able to sort out the wires with a Volt/Ohm meter easily - it will have a big hot wire, one that feeds the coil from "Start" and "Ignition" positions (coil positive feed will probably have an in-line resistor, or be a resistor wire to drop your running feed to ~9V); one going to the starter solenoid from "Start", and a feed to your fuse block from "On" which is your primary feed to everything else. Here's a link to a very basic wiring diagram http://www.ripper1.com/tech/wiring/wiring2.jpg I've seen better, but I can't seem to find them quickly this morning.
If you've got a rat's nest of wiring that someone has cut & patched over the years it might be easier to strip it out and start over with a new fuse block & harness from one of the many companies that supply our hobby. I used EZ Wire, and a dash harness from Painless; others like American Autowire, Haywire, Painless, etc, etc.

Holler back if you have specific questions, and maybe post a picture or two of what you're working on so someone can help easier.