Linux Mint is an Ubuntu-based distribution whose goal is to provide a more complete out-of-the-box experience by including browser plugins, media codecs, support for DVD playback, Java and other components. It also adds a custom desktop and menus, several unique configuration tools, and a web-based package installation interface. Linux Mint is compatible with Ubuntu software repositories.
Linux Mint can be run from a Live DVD, or a Live USB Drive. Install can be done from the very same. Linux Mint is free to use and is one of the top distributions in the field.
To create and use a USB drive download Lilli USB creator:
Download here: http://www.linuxliveusb.com/en/download
A couple screenshots of Miny Quiana Desktop:
I rate this Linux OS as one of the best, and with long term support and updates for free.