i guess this an opporunity to try a Linux in a "live" flavor; old laptops had cd, and dvd drives , if yours had one all you would have to do is boot a Linux live straight from the drive. if so you could walk to to wh Smith buy linux mag with a free dvd and your off.
If not can also put Linux such as Knoppix onto a usb; but you need to access another pc to do a DD if= of= to transfer iso to stick
That's a vague statement. It's like asking where you can buy a car...Yeah im just throwing it there lol (me and my big mouth ) Annnnnnyyyyhow! It depends what your laptop specs are and what you want from an operating system. What operating system are you used to?