Reddit reviews Donny's Unauthorized Technical Guide to Harley-Davidson, 1936 to Present: Part I of II-The Shovelhead: 1966 to 1985

Start by buying this. Then the FACTORY service manual. The older manuals aren't great, but you'll need it. You're also gonna need a few specialty tools that the manual will tell you of, depending on what needs to be gone through- clutch hub puller, transmission sprocket nut socket, 4 speed shifting fork timing tool, timing light for ignition, torque wrenches, a bottle or blue 243 LocTite and a bottle of high-temp anti-seize compound.

After that, it's a matter of good mechanical habits, using LocTite on all fasteners that don't get anti-seize compound, and so on. Read the Donny Peterson book. It's filled with useful stuff you'll encounter.

I’m in the same boat as you. I’m looking for more of an ok rider/winter project though. Pick up Donnys unauthorized tech guide. https://www.amazon.com/Donnys-Unauthorized-Technical-Harley-Davidson-Present/dp/1475942826/ref=nodl_

I bought it and have been reading through it and it’s a gold mine. Hope someone can offer more good luck.