For someone beginning he should pick up an IWATA. These iare a good introductory gun that can be had fairly cheap.
When it comes to more expensive guns, painters kinda have their own preference. I've shot with many guns but I always seem to go back to what I learned on. Devilbiss. I have 4 of them. And will be purchasing another dedicated clear gun here in the next month.
For a dryer, its a must have. Dont try to paint without it. Even a little bit of water will slam a paint job. Start out with a dissicant dryer. Dont buy anything under $100.00 if hes looking for a decent, get the job done, one.