I've heard GMAW referred to as "the hot glue gun of welding" because almost anyone can pick up a MIG gun and a helmet and fuse two pieces of metal together. "Point and shoot" extends the camera analogy because it reminds you of the difference between a photographer (the guy that knows his camera inside and out, and adjusts F-stops and filters and exposures and develops his own prints) and the guy that remembers to take the lens cap off.
If you have time or inclination there's more reading at ESAB University: http://www.esabna.com/EUWeb/MIG_handbook/592mig1_1.htm
The layout is a little confusing until you figure out they show a table or chart on one page and discuss it on another. For instance page 6 of the transfer discussion talks about Globular transfer but shows a table for the Spray method on the next page.