To be honest, none of them are that good. You'll learn most from experience, so start slow when getting into PPC (spend only what you can lose) until you have a solid understanding of it.
so you are saying there is no way i learn before i lose some money on campaigns? my last adwords campaign los me 35 dollars in 3 clicks, i only bid like $1 per click, and google charge my arms and legs for my ad impression. i used the ad from the first position in google, and modify it a little, and thought for sure that ad will convert, otherwise that other guy in the first position will lose a lot of money since i see that ad running like everyday.