ChirpyKez, I rememeber when I first wanted to burn some cds, and feeling overwhelmed about my inability to do so, and my lack of knowledge on how to master it, so I guess you feel the same. You need to buy cdr discs, and most have the same capacity, 80 minutes, somewhere between 16x and 52x speed (The rate at which your cd writer burns them) 700mb (The size of files that can be written) Audio cds dont use up much space in terms of size but only 80minutes, so although you could burn 150 mp3's, you'll only get a cd for a cd, but if you burn a load of mp3's some newer cd players will play them. (My dvd player plays a 150 mp3 disc), but data cds hold much more, but as its music files you want to burn, then you also might like to buy some cdrw discs which can be used to burn files, then rewritten and used again, but these cdrw's are no use for a permanant copy that you wish to play on a home cd player or in your car, only cdr' discs can do that, but no doubt someone knows different, so you buy your cds, you put one in your cd drive, you open up your media player, click burn, drag your files into the media player, then make sure your cd drive is making an audio cd, click start burn, go make a cup of tea, and come back and hey presto! Good luck and let us know how you get on, before you know it you will be an expert.