I second the reloading manual. It will have step by step instructions on the reloading process and have pics showing the dies, perhaps cutaway views of the dies to show how they work, and is a very good place to start so you can wrap your mind around exactly what all is going on and how it works. Reloading is one of those things that is easy to do but demands attention to detail. The Lyman manuals seem to be one of the best manuals and the one that I recommend.
Go get the manual and read the entire section that prefaces the data, then come back and ask specific questions.
Equipment is a touchy subject on this board. Many Lee owners profess great success using Lee equipment, and there's no denying that it is cheaper. Others tell tales of great frustration because of Lee equipment. One thing only stands clear after reading some of the threads debating the merits of Lee vs RCBS or whatever. That the Lee equipment is commonly known to be (potentially) problematic. RCBS is solid equipment and no one argues this. If an RCBS item ever has a problem, it's the exception to the rule and not the rule. Buying better tooling is never a mistake, imo. The value comes in trouble free operation. YMMV.