RE: 45 auto
I reload with the basic single stage press. Once I get my powder dispenser set, I load 10 cases, check weight and continue. If there is a problem with the weight, I only have to dump 10 cases. For my 45ACP I picked up 5 boxes of Federal's American Eagle ammo. I got a good deal at $12.69 a box and now have 250 cases to load, all the same manf and lot. The way I figured it adding up the cost of all the components, I got these 250 cases for somewhere around $5 which was darn cheap.
As for a press, you can't go wrong with a RCBS press. And it will last a lifetime. As for info on loading, a good reloading manual usually explains the step by step process. And of course you always have us guys to answer questions.