READ THIS BOOK before you buy another coin or add bullion to your holdings.
"Secrets of the Rare Coin and Bullion Business from a Longtime Trader" by Michael Garofalo is one of those rare books that actually teaches you about how the industry works behind the curtain. Garofalo covers the industry from the insider's perspective and devotes chapters to everything from retail marketplaces like eBay, to pricing sources, trade publications, grading services, major retailers, and even CAC.