Hello there :) I happen to do a little bit of dubstep and dnb music (go to my profile to hear it.) I would suggest starting out with Audiotool.com if you need a good foundation on effects and such. It's free, and has samples you can use as well as some killer effects! You can upload your sounds as well. I'm currently using that to create my songs, but I'm not selling them because I use other people's sounds. As far as using your own, I'm not quite sure, but when I get some equipment, I'll let you know :) PEACE!