Patience, and learn something on every step. Preparation is key, and the more you mock up and play with the unpainted styrene, the better you familiarize yourself with the model. And, of course, stick around this forum.
David, I usually use the thinner that is recommended within a paint system . . . i.e., with HOK I use Medium Temp reducer, etc . . . .
The second DVD, Donn really goes all out and shows you all sorts of great tricks. About 4 hours worth (2 DVDS) and my favorite is the sections on kit-bashing (I'm a believer now that the 66 Chevy Nova and the Super Bee are great for robbing parts) and engine and interior detailing.
Donn's approach to his method is just fun to watch. And through him, I got to relive the excitement of what this hobby can truly offer. Just the gleam in the eye and pride in work well done. His model speak for themselves, but he is a natural teacher . . .
The only true way of appreciating someone's tips and techniques is to put them to the test, and right now I've got the first model I've painted in enamels in over 30 plus years and I can't wait to get it done so I can share it here.
Plus the smell of the stuff really takes me back, way back to when I started . . . it's a great feeling.