Welcome! That’s a good endeavor and I’m sure you can do it. But you’ll want to start a thread in the main section to get the most help as that’s where the bulk of the members look.
We have a member’s map (Bullnose Forum/Member’s Map in the menu) and I’d be happy to add you if you’d like.
A warning is that Haynes is generally good, but doesn’t get into specifics. However, we have a lot of the sections from the factory shop manual on here and they are much better on the specifics. And if you don’t find what you are looking for let me know.
After all this time the gas will be bad, and the tank may be as well. Don’t try to salvage the tank as a new one is about $100 and saves a lot of headaches.
As for starting the engine, I would pull the distributor and reach down with a long extension and socket, all taped together so they can’t separate, and turn the oil pump to prime the oil system and lube the bearings. But after changing the oil.
Gary, AKA "Gary fellow":
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Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI