LD pretty much said it. A reloading manual is a must, one, two, three, like guns you can never have to many. A manual that explains the basics and gives an understanding of what is happening in the mechanics of a fired round and reloading. What to look for in cases, primers, that could spell trouble. Read it and as much info as you can. Fallow the powder loads and recommendations. Then you will have an idea of what you need for the basics. A chronograph is a very good thing to see how your reloads are performing and alert you to any unsafe issues and develop more consistent loads.