You’ll need a USB-connected one if your computer doesn't have one built in. Just about any PC or Mac these days can handle DVD playback, but the physical drives are becoming rarer. Once you’re sure you’re not going to get a visit from the police for your actions, you’ll need a home computer with a DVD drive attached. If you own the copyright to the DVDs - perhaps you shot them yourself on vacation one year - then you can do what you like. While some places allow you to basically do what you like, others allow you to make a single backup copy, and others criminalize all violations of copy protection software. There’s one thing that you absolutely have to do before you go wild ripping DVDs with the best DVD ripper software, and that’s check the laws where you live.
