When buying any used boat, it is always money well spent to have a reputable boat mechanic go over the boat and report any issues.
First step I would suggest is find out who winterized the boat and who did any mechanical repairs to the boat and then give them a call.
You will need some way to tow the boat. Even if it is just to borrow a pickup to take it to a mechanic every year to get it winterized.
If you have never driven a boat, find someone to teach you how. It's nothing like driving a car. No breaks and you are always dealing with momentum, current, waves, wakes, and wind.
Spend a lot of time watching YouTube videos on driving and maintaining a boat.
Highly recommended taking a boating safety course and it may even get you a discount on your insurance.
If you are willing to put in the time and money to properly maintain and operate your boat safely, boating can be a very enjoyable pastime.
Great family time.
Good luck.