airbrush help, compressor?

[turbo scorpion]

ok. im looking to finally buy an airbrush.
i dont need anything fancy infact simple and easy to use is best. and cheep. lol.

main question is what do i NEED far as a compressor goes.
can i use my shop compressor and "just" add a filter/dryer to it and turn the psi down at the regulator?

also sugestions for a (cheep) brush.
dual vs. single action?
siphion vs. gravity.

thank you.
TS