Is the "raw DVD" a data disc (if so, what is the video file format?), or a DVD disc you can play on a regular DVD player? If it's the latter, the files are mpg (most likely transcoded/exported - only some old consumer grade cameras store mpg), which is a delivery format and needs to be re-transcoded to a editing format. Every time you transcode (import/export), you will degrade image qulity.
Just make sure you get the raw files - by that I mean the un-transcoded/un-exported files, like they are straight of the camera. These files will have the best possible qulity, and be your best possible source clips, should you decide to start dabbling with editing.
As a hobbyist you'll probably spend more time on google and forums, then editing when you start out. It can be quite the learning curve depending on what NLE you choose. But when things start to work out, it's just so fun it's more then worth it - have fun