This is what I started with, but you'll need more than this, like a mentor to get you started.

Reloading your own ammo is a great thing... But you can get in serious trouble in a big hurry... I strongly suggest that you find someone that can at least get you started with the basics. My first reloads were for an ultra mag... I got into case stretch/head space issues right away. The guy that got me started didn't even realize what was happening, and gave up when the pressure spikes started happening... I had to seek a lot of advice before I learned about what was going on... Not a big issue if you understand whats happening... A potentially huge issue if you don't... It's an issue you may run into more with your .300 mag than your .308... I also strongly suggest you buy a chronograph, it's an invaluable tool to help you see such issues developing.

There's also plenty of equipment available on ebay, but if you don't know what your looking for, and why your looking for it I wouldn't bother.

http://www.midwayusa.com/product/423...ProductFinding

I should also add that you'll need a manual. The Lee manual will get you started.