New to Dreamcast Games????

[kith]

I am new to this so be easy, I was just wondering if you can back up DC games that already have been done?? If so what programs would I use?? Also with self bootable games means that you just put the game in and it boots straight away?? What type of games use a boot disk? Is it an overseas game?? Also with boot disks, how do I make a second copy of a boot disk that I already have?? What program do I use? If any info can be given to me it would be greatly appreciated