I have the badger 100g, which is the same airbrush as the 100lg, it just has the smaller color cup. In my opinion I don't think you can go wrong with any of the badger airbrushes for your first time out. The first airbrush I used was a badger 155 anthem, still use it. The 100 series brushes probably are better suited for fine work and the 155 is more suited for general usage, base coats, spraying future etc.
As as for compressors, I've used everything from a craftsman shop type compressor, a pancake compressor, and I now use Badger Cyclone 180-12. Got it from Micheals using their 50% off coupon. These airbrushes aren't finicky when it comes to their source of air, just as long as blows a steady psi, it's happy.