Welcome to cdfreaks.
I would like to learn you all about dvd burning, but it's not possible to do it in a single post. I've been learning for years but still don't know it all.
To start with get quality media like Verbatim branded DVD+DL's. Read our guides and tutorials. Apps like DVDFab decrypter, RipIt4Me, DVD Shrink and ImgBurn also have their own forums in that section I linked to.
Visit homepages for apps you are using, most of them also have good guides and forums.
Hope it helps to start with. :flower: