I started out playing around with this stuff back in high school. I went to a Tech school for body and paint after high school. I have never done this for an actual job more for a hobby. One thing i will say is don't mix product lines, for example don't paint with PPG paint and then clear it with a different brand. I learned the hard way and have had some wierd stuff happen when I tried it....never again... I don't paint all the time but, you don't need a super expensive paint gun to get good results. I have shot for years with some pretty cheap paint guns. The last car was with the $15.00 H/F purple gun and, I think it worked great. You can use a cheap gun as long as your technique is good. Your paint job is only as good as your prep work.