The beautiful thing about Smith & Wesson revolvers is that they're simple and, if you do screw something up internally, replacement parts are easy to come by.
I taught myself how to tear down Smiths by doing.
It wasn't until much later that I got Jerry Kuhnhausen's shop manual and taught myself how to do action jobs ranging from replacing springs to polishing the internals to recutting the single-action sear (and case hardening it) on a hammer that someone before me had screwed up.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.