For scratch repair, try the Langka kit. Very good kit for an amateur.
I use touch up paint, overfill, wetsand, polish. That's, of course really over-simplified, and wetsanding isn't somthing to rush blindly into.
Here's where to buy the Langka kit.
http://www.langka.com/complete-paint...-kit-p-30.html
You will need to source the touchup paint though. Safest bet for a perfect match is:
www.paintscratch.com