Welcome!
As others have said, I would concentrate on getting it drivable and just run it for a while. As you get used to it you'll decide what steps to take next.
There are really no hard and fast rules. It's your truck--do as you wish with it.
Since it's been in the family, I assume you have a title for it? That should give you the vin # and whatever info you need to insure it. You'll need insurance to put it on the road in this state--or even to get plates for it. Your insurance agent should be able to advise you on what type of insurance to get based on your intended use.
Good luck, and keep us posted!
