Nah, just learn about gun maintenance. Not talking the hard stuff like castnig barrels, just the easy stuff: polishing out scratches, replacing springs. Your local range/ gun shop will probably have somebody that can teach you everything you know in a couple of days tops. For the most part guns are pretty simple and straight forward technology with suprisingly few moving parts. You should know that kind of stuff to be a responsible owner anyway. The list of skills is pretty short: you need to be able to break the gun all the way down and put it back together right, what parts to oil and how much, how to spot scratches and dings in the barrel and chamber, how to polish them out when they're minor, how to buy new parts when they're not and how to test the springs and figure out when they need replacing (and that's minor, unless you shoot a lot the springs will last pretty much forever).
You can get most of it from books, but it's nice to have somebody near buy that knows what they're doing the first time you completely take a gun apart. Just think of it as earning your handle, Clemenza knew his guns pretty good, and his spaghetti sauce.