Rufus is a easy program that does this for you
- Download Rufus
- Run program.
- Check that the Device is correct.
- Select ISO (by clicking small CD-rom button at the left… Where it’s written «Create a bootable disk using…»)
- Click Start.
The other way
Check this link, to do it the hard commando-line-style way – or check one of my old blog post (in Norwegian).