Thor,
If you buy a complete reloading kit it will most likely come with a loading manual. At least the Lyman kits I've purchased do. Inside the manuals you will find loading data for most calibers, using various powders and bullet weights. Once you decide what bullet weight you want to load, then find the load data for that particular bullet weight. Most powder companies and bullet companies such as Sierra and Speer put out loading manuals for the bullets they produce. There are also caliber specific booklets sold with loading data from several bullet makers. They're about $8.00 from places like Gander Mountain.
If you don't purchase a complete kit, some of the things you will need to load rifle cartridges are the press with a priming attachment, a powder scale, dies, a powder measure, case lube, a chamfering / deburring tool, a set of calipers to measure the overall length of your cartridges, and a case trimmer. When I began reloading, I only loaded pistol cartridges and could use carbide dies that didn't require I lube my cases. I also didn't need a case trimmer for pistol cartridges. With rifle cartriges though, you will have to use non carbide dies and lube your cases. Most complete kits contain all or most of the items you'll need to produce good ammo. Some may not contain a case trimmer. A powder measure is optional but makes the job much easier. You may also find that you want to purchase a case tumbler, to clean and polish you cases. While not really required, it makes resizing much easing when you have nice clean polished cases.

Coyote 6974

He's easy to track.. Leaves dead coyotes wherever he goes..
(Fletcher Red Leggs)