There is a wealth of knowledge on this forum, but i will answer you regardless, but will ask questions to suit you as well.
1.Do you live by a local hobbyshop?
2.Do you live by a local Airbrush shop?
3.Do you only shop online?
4.How often do you plan on painting?
Answers:
1. If you do, most local hobbyshops carry paasche or badger airbrushes whicha re fine for starting out. If you are lucky enough to have a cool hobbyshop, buy an Iwata Revolution.
2. If you do, again, buy an Iwata Revolution. Best bang for the buck. If not, see #1 or #3.
3. If you do, i recommending buying at
www.coastairbrush.com.
4. Like anything, airbrushing is an investment. If you do not plan on going into this long term, then don't spend too much. If you do plan on staying a while and seeing how good you can be, i recommend buying an Iwata Eclipse.
Thinning is not needed if you stick to KISS(Keep It Simple, Sir). You can buy Acrylic paints like Faskolor or Createx and 85% of the time you do not need to thin them down.
Now, here is an Article written by the great MAXX from CFX paintworks.
Whether this is your very first shell, or your third, there are a few basic supplies you'll need to get started and finish up your new paint job.
The very first thing you'll need is a pad of paper and a pencil, because you need to sit down and think, and make a list of the things you'll need before you start. You don't want to get half way through a paint job and have to stop to take a trip to the store. Besides, that pad and pencil will come in handy to doodle your new design on later.
Now that you have the first two items needed, grab your pencil and paper and jot this down. You'll need a fresh new shell. (Duh!) Yeah, don't think your the first to hit the garage with your bag of goodies only to stand there scratching your head wondering where you put that body. Oh yeah, you forgot to buy one! Doh!! That's what the list is for folks! Razz Don't forget the soap and water to wash the body out. Yes I've had to postpone painting just because I was out of soap! Next, you'll need some paint. Tamiya, Pactra and Spaz Stix all offer great colors in spray cans for polycarbonate shells. If your using an airbrush, Parma is an addition to the great colors you can use for your new paint job. Any of these paints can be found at most all Local Hobby Shops (LHS). Since your just starting out, you'll want to limit your color choices from one to three depending on how confident you feel. Next, you'll need some sort of masking material. 3M Scotch brand masking tape works great. The Tan color will work, but if you can find the Blue painters tape, it leaves little to no residue when peeled up. Next you need a hobby knife (and blades) if your design calls for any sort of cutting. You might also want to pick up a self healing cutting mat, but not a necessity. You can find these at any craft store or in the craft section at your local Walmart. You might want a Sharpie marker if you want to draw your design on the outside of the body. You'll also need a body reamer and some Lexan scissors to get that shell mounted. And don't forget a respirator or dust mask, preferrably a good quality respirator and paint in a well ventilated area like outside.
Your list should look like this;
Paper
Pencil
Shell
Paint
Masking Tape
Hobby Knife
Sharpie
Body Reamer
Lexan Scissors
Respirator
With this list you should be prepared for a new paint job.
Now, that you are commited to learning more, may i suggest going to
http://www.cfxpaintworks.com/modules...viewforum&f=37
This is a section JUST for beginners at CFX PAINTWORKS. You may browse there at your heart's content and learn a few things or a few hundred...depends on how eager you are. Happy Painting!