I have an old Windows 7 laptop that is now too slow to use, so I want to try Linux instead of throwing it away.

Ubuntu seems to be the most recommended one, so I've downloaded the ISO onto my Windows 10 laptop. But how do I burn it onto a USB stick making it bootable? The Ubuntu site says to use something called Rufus, obtainable from Microsoft, but the link is dead and I can't find it on the Microsoft site. I can't find any software on my Windows 10 laptop that allows me create a bootable USB stick.