The hardware manual wouldn't help anyway. The exact steps will vary depending on the software you are using and what type of discs you are trying to copy.
If they are data discs, you can simply use the copy function of any burning application.
If you mean movies, then there are several steps. 1) RIP the disc using DVDFab HD Decrypter (FREE - http://www.dvdfab.com/free.htm ) to your hard drive. Then use ImgBurn (FREE - http://www.imgburn.com/ ) to burn the files from your hard drive to a DVD.