I'm a noob who just got back into models let me offer 4 months of lessons: They are from a novice to a novice:
Acrylic paints have much less fumes than enamel and for airbrush clean up all I have to do is rinse under a faucet and shoot some water through. I don't have a vent system so I bought a good ventilator mask from Lowe's for $30. The fumes you avoid using acrylics vs enamels is HUGE and the clean up is great. I use model masters and mix it about 1 distilled water to 3 paint ratio. One thing I have seen about acrylics is sometimes a priming coat is necessary because they don't cover as good as enamels. However, once you do a priming coat they go on awesome.
You will have to practice with your airbrush. I am just now getting the hang of the basics.
Recommend getting a couple of scrap kits to build just to experiment. I only did one then jumped into a 1/48th B-17 which I thought would be so perfect it could actually fly. Too big a bite for my skill level although lots of lessons learned.
Also, go to a local model show (they publish some dates/locations on this forum. They often have dealers that sell kits and books at fantastic prices. You'll also have tons of experts around that would be happy to discuss any questions, etc you might have based on your skill level.
I've also found this is a great site for techniques: http://www.swannysmodels.com/Tools.html
I've found a reliable, cheap supplier online at hobbylinc.com but try to support your local hobby store as much as possible.
Good luck!