Look on smokerplans.net... specifically look at the Mack.
Learning generally boils down to "Repetition or the avoidance of pain", some people learn by doing, some by watching and some just have to pee on the electric fence.
Whether you think that you can, or that you can't, you are usually right. Henry Ford
If you look at the specs for this pit, the only thing they dont give you is the size of the throat. You can use the pitbuilder calculator to get a throat dimension that will work. Oh yeah you will have to do trial and error with the tuning plates.