Hi Ripcord. I too am in the same boat as you. I am rounding up supplies to start modeling again. After doing some reading up on things, mostly on the site. I have decide, because you have to start somewhere, to use Testors Model Masters Acrylics (mostly)
The people here will chime in, I'm sure. But as a beginner at wanting to do better, then that kid, 30 years ago. (OMG). I'm going to start with these a hopefully get profitiant with them, then branch out from there. I too, purchased an airbrush. I found that Testors has a toll free line to call and ask questions on.
One thing I learned from them is that it is ok to use enamels with acrylics. As long as you apply the enamels first and let them dry completely before appling the acrylics. This might be needed if you can't find a color you need in acrylic.....
There does seem to be a lot to learn about wanting to do the best job possible. have fun.