My introduction to reloading was when I earned a place on the local police pistol team...We reloaded our practice and match ammo on a worn out progressive set up and after much frustration, I wound up buying myself a RCBS Rock Chucker single stage, just so I could match my rounds to my firearm and get some consistency that I could count on...
Fortunately, the other guys were great about walking me through the basics and we already had some basic load information available...
Thirty years later, when I started reloading bottle necked rifle cartridges, I found it was a whole different ball game and, fortunately, I had a friend that could mentor me on the differences...He had a couple of current manuals that he loaned me until I could get my own...