I really want to get started using Ubuntu on an old laptop I have, but I have to know the file size. If it's really small, I can use a DVD-RW that I already have lying around. If it's less than 4GB, then I can use either a derpy flash drive, or I can get a larger DVD-RW. Any bigger than 4.7 GB, and I'll have to use the network installer. I would be okay with this, but having a version of Ubuntu on a disc would be best for what I want.