painters and paint gun experience

[Noir]

Any painters here or have worked with paint guns?

I'm planning to paint the following:

my house - exterior
my house - interior
my separate garage - exterior (that's filled with junk)
my mum's house - exterior
and maybe my mum's house - interior

I could hire someone to do it, but since I have time, I thought I might as well save some coin, you know for the svx.

Anyway, I thought about trying out those paint guns to save time and effort. Does anyone here have experience using paint guns before. Any words of advice or procedures that I need to know of? Tricks maybe?

I saw that there are a few types of paint guns. HPLV, Airless, and regular paint guns that run off air compressors. I have an air compressor, can I buy a gun kit/set that would work with it?

Any suggestions would be greatly appreciated.

How about painting cars, is it similiar or can you use similar guns with different paint?