If you want to paint using and airbrush iwata makes really good air brushes and some are starter kits that come with a compressor as well.
for paint I use createx airbrush colors or their wicked series, if you’re shooting under 30 psi like I am it’s good to get the createx reducer to add in and thin the paint a little. You can also use these with a paint brush for making eyes or doing more detailed work as well.
The last thing really needed to get started is airbrush cleaner. It’s best to use the same brand as your airbrush gun. I clean in before using, in between colors, and after. This helps clear and break up any paint that may get trapped in the gun.