Welcome to the Bolt! Looks like you've got a good solid old truck there. Even more special that it has a family connection.
I would second the motion of getting it running and driveable first. Take it in small steps. It's easy to tear something apart into a million pieces and then get overwhelmed by it and lose interest. Being able to drive it while working on it helps keep the enthusiasm up. Plenty of good advice and help on these forums.
