9mmsnoopy--The best primer for learnining the ins & outs of reloading IMHO is The ABC's of Reloading, available from your local gun shop, a gun show, Midway or any of the big mailorder houses, or from the publisher, Krause Publishing.
www.krause.com is how to contact them.
This is not a loading manual but a textbook on the subject of reloading.
The above advice to get and read a loading manual is also good--My preference is for the Lyman's 48th edition manual. More than one manual is better. The big manufacturers also put out little pamphlets--on their own products, natch--which are available at your local gun shop or for the asking from said manufacturer. These all will be helpful but for starters you want the book that talks about the "how to" stuff, not the recipie books. That's why ABC's is so good.