There’s plenty of DVD ripping software out there today. Trouble is they vary wildly in the needed level of expertise needed to get them to work. If you’re the person who just wants to make a backup copy to your hard drive of either the whole disk or just the main movie, DVDSmith may be for you. Seriously, just insert the DVD and choose one of two buttons: Full Disc or Main Movie. (You may also want to choose your output directory too.) That’s it.
I’ll also mention that if you’re looking for a great introduction to the different types of DVDs check out their Overview page.