well the most i can help is with painting your computer case if your interested with that at all which u could use this to also paint your speaker monitors and what nots this video is about airbrushing but u can learn on how he sands the kind of paint he uses and clear coats its a great tuturial and its in 4 parts and i used this video to help me with my case when i was airbrushing hope it helps!:)

http://www.youtube.com/watch?v=fgTLF0wONRE