RE: Selecting a Press
As stated elsewhere, I would go with an "O" style press. More accurate and stronger and not really any slower to use than a "C" type press because there is more clearance around the ram on the "O" press.
Unless you are going to load huge volumes of shotshells at one time, you can't go wrong with a Mec 600 or a 650 progressive. Both will last you a lifetime with a little care.
Most important, buy loading manuals from different powder manufacturers. Lee puts out a good one, as does Hodgdon. Don't use anyones "miracle home brewed load" and you'll be safe. Enjoy!!