You're better off downloading games (that you own

) from the net because ripping dc games is not as easy as it seems.
Not only that you need to buy either the broadband adapter or the serial cable (there are also tutorials on the net on how to build your own), but you need to learn how to downsample files and remove protections.
My advice is: read up on the echelon's selfboot tutorial, bin2boot. Practice selfbooting some already backed up non-boot dc games if you have any, or try the emulators and buy lots of blank cds