That live dvd is a great choice (well, I am downloading it now but the 10 was wonderful) as is almost any live cd/dvd/usb.
The term live cd tends to be a fully created, boot to cd and run gizmo. No batteries needed, no compiling needed.
The live dvd is a full linux that you can easily use to learn and play with. Sadly Gentoo didn't include an installer for the last live dvd but you use the live dvd for years.
There are some tricks to getting live media working with what is termed persistence. Gentoo may allow one to can be made to allow saving of session data.
Consider smaller distro's if downloading is an issue.
Last edited by jefro; 03-09-2011 at 05:37 PM.