Strongly recommend a book - The ABCs of Reloading. It's one of the best introductions to reloading and will answer many questions. You will also need a reloading manual put out by one of the major companies - don't take anything off the internet until you have some experience. There's a lot of sh*t out there, some of it dangerous.
Single stage vs turret vs progressive... I think it mainly depends on how much ammo you are reloading. If you are shooting 100 rounds a week, a single-stage is fine. If you're shooting 2,000 rounds a week, then you need a progressive.
Much of the fuss over brand is the same as that between GMC and Ford trucks - personal taste and bias. I've got a multi-coloured reloading bench and have no complaints about any brand.
Welcome to the dark side.