@Janey If you have access to a computer, Download that and select create installation media. You can either burn it to DVD or use a 8gb or larger thumb drive. Thumb drive is the easiest.
It takes me about 15 minutes to download and create a bootable USB drive. Pretty simple to do if you follow the instructions. You can put Windows 10 on any computer as long as you have a Windows 7, windows 8, windows 8.1 or windows 10 product key. It will activate automatically as soon as it connects to the internet the 1st time.
If it doesn't automatically activate there are ways around that as well. I won't go into the specifics here. Lets just say that they have questionable legality. lol