so, the school has some laptops that are around 12 years old just sitting in some cabinets, and my physics teacher decided today that he didn't want to see them anymore, so he pulled out 7 or 8 of them, and just gave them to anyone who wanted them. I took one (it was free, so I thought why not), but i dont exactly know what to do with it

I'm thinking of updating the parts, but i dont know how to go about doing that (or if i can do that), so........

Any ideas about how to get started?