Hey Crash this book taught me a lot on finishing planes.
http://www3.towerhobbies.com/cgi-bin...&I=LXL792&P=ML
Spend the money and time painting those cereal boxes. Seriously you get the skills you need for the model really fast that way. Don't learn to paint on models. You'll only get to paint 4 or 5 a year. If you do boxes you have over 50 in a year. Don't think of painting boxes as wasting paint. Your learning hard won skills.