Go up to the top of this page, click on those buttons and start reading.
Start here, under question 10 (about history):http://www.camaros.org/geninfo.shtml
Go to question 9 and order first:
Alan L. Colvin's Chevrolet By The Numbers, The Essential Chevrolet Parts Reference, 1965-69, Robert Bentley, Inc., 1994. ISBN 0-876-0956-9
Gather the numbers and anything you cannot figure out, post under Decoding and CRG will help you. I'm sure you will get more advice from others. Welcome to the "club"!
(Looking back at your other two posts, I see you've already posted your cowl tag...)