When I started airbrushing Fateweaver and MistressOfMinis helped me a ton... so if I can help I will try.
Here are some resources I'd recommend:
My new favorite article and a great starting place:
http://www.akaranseth.com/blog/tutorials/airbrushing-for-figurine.htm
Mathieu Fontaine also has a video with the Miniature Mentor series, a dreadnought torso, that has some good airbrush stuff.
Another favorite:
http://www.airbrushguru.com/index.html
The best
ab forum:
http://theairbrushforum.com/oldindex.php ...it is pretty active and you can get questions answered pretty quick, by people who really know.
Going down your list - here is a start:
1)
Most folks agree that for mini painting a
Gravity Fed,
Dual-action (or double-action) airbrush is the best option and will make the most efficient use of mini paint.
2) There are several respected brands of
ab manufacturers. Harder & Steenbeck and Iwata would be at the top in price and quality. Iwata offers a little less in terms of extras and costs a little more, but Iwata parts are easy to find and replace; and their customer service is outstanding. Badger is well respected though I have no personal experience, and Paasche makes some very fairly priced, nice airbrushes (the Talon is often recommended here). You can also get a bargain
ab like the PS900, often recommended on dakka, or the Masters 'G' series which may require a little extra care (mine needed beewax to keep a seal) but work great otherwise.
Some hobby shops sell airbrushes but I've yet to see one with a good selection. Dick Blick sells a few models... your best bet would be online in my opinion. ASW Express, Chicago Airbrush, Idle Hands Hobbies (for Harder & Steenbeck), or even Ebay. There is also TCP Global and Harbor Freight.
3)
Most folks agree that for mini painting you want a compressor with a separate tank, a moisture trap (or 2), and an auto-shutoff. There are many alternatives here though from the air cans you get from
GW to a car tire; I won't go into these though. In my opinion braided hose is the best.
4) For cleaning I think this is the best resource:
http://www.airbrushguru.com/cleaning-your-airbrush.html ...but I'm sure youtube has many good tutorials by now.
5) The workstation is actually quite easy. The
AB is so precise that it doesn't require as much attention as you might think. As long as you are using acrylic paints that is. My workstation is near a window that I can use for ventilation if for example I am spraying cleaners through the brush. To prevent spray-over I just use a folded piece of oak-tag paper. There seems to be quite a lot of different opinions about this topic though, some folks create elaborate spray booths etc.
6) The Forge World 'Model Masterclass' book is actually a great, great resource (now available from
GW). There are also many videos you can buy (the Mathieu Fontaine video mentioned, MIG etc...) and of course there are so many great short tutorials on Youtube.
7) I would just recommend sticking to acrylic paints; I'll let someone else get the first word on this though.
8) Any of the good mini paints will have fine enough pigment to work well in the
AB, with proper thinning. Thinning is where people have such varying opinions however. A lot of people use Windex, which will certainly work in a pinch. But once you have used a proper airbrush medium (like Liquitex or Golden) it is tough to go back. Lots of folks use a mixture of Isopropyl Alcohol and water, but like Windex it will evaporate rather quickly. The proper mediums will not give you as many headaches and will keep your tip wetter, longer (hah).
9) Most important
imo is patience. The
AB has a big learning curve and it will frustrate you in the beginning. Learn to clean it properly, something you will do too often in the beginning, and practice, practice, practice. Start on terrain and keep pushing yourself to paint smaller and smaller areas with the
AB.