DVD Catalyst has been designed with exactly this type of conversion in mind and on the whole it does an excellent job. Once installed, the main menu presents you with two options - "Convert DVD" and "Convert Video". Both do pretty much the same thing except Convert DVD is obviously designed to convert a DVD that's recently been inserted. Before performing conversions using "Convert DVD", DVD Catalyst gives you the chance to change data such as the output options, a preview display, audio sample rates and video quality. The program will automatically select the first track of the DVD which is usually the primary film track. The only other things you have to do are create a name for the output file, select a destination folder and click "Convert". This is remarkably straightforward for a DVD converter which often involve difficulties in identifying which files from the disk need converting - this program does it automatically for you and usually gets it right. What's also unusual is that the program has a dedicated support team which is unusual for a ripper.
The key to DVD Catalyst's appeal is it's simplicity. For beginners, they need look no further for a simple yet powerful DVD ripper.