rufus is a sublimely easy tool for making bootable usb drives from an iso file. I've become a bit of an evangelist for it because I'm so happy after discovering it. It's open source and free and claims to be faster than some of the conventional tools.
Home page HERE
direct download link HERE
I've had some issues with various OS and distros booting or installing on various hardware (amid success also it should be noted), but the causes may have nothing to do with rufus. I've emailed feedback to the developer and had replies, so I'm going to do more testing with this latest release and then provide more feedback.