I have a testors airbrush, which is very low maintenance as you just change the nozzle for different effects. It is a dual action but if you want to learn to do fading and grading of colours then you will need a dual action one. I have no where to use an airbrush these days so you are welcome to borrow mine. I dont have a compressor but I have read on various forums that some people just use a spare car tyre that has been well inflated. Certainly worth a try to start with as I am sure you will have a few car parts lying around. A decent quiet compressor can cost a fair bit, or you can buy an industrial one from Screwfix for 50 quid (noisy though!).
I will try and remember to bring it in on Monday for you.
When young, I read fairy tales in secret and would have been ashamed if I had been found doing so. I am fifty now I read them openly. When I became a man I put away childish things, including the fear of childishness and the desire to be very grown up.