I've always used 3.5" floppy to store my files but now I got a new laptop which only has DVD-/+RW built in. I'm unsure if can save files like the floppy, by that I mean can I just write over my old files for the new the one over and over again?
It just plugs into one of the free USB ports on your computer and you can use it just like a floppy. Only it's much faster, doesn't lose your data, is a lot more robust, and stores a lot more.