Important Coin Links:
ANA (American Numismatic Association)
CDN (Coin Dealer Newsletter)
Coinflation (GREAT resource - Prices based on bullion)
Kitco (Premier site for precious metal prices)
Numismatic News (Affordable weekly coin publication)
The Nerdy Numismatist (Coin Blog)
Allnumis (Comprehensive Coin Catalog)
Numismatics and Faleristics (AWESOME coin site in Russian!)
Favorite online stores:
US MINT (Great place to shop!)
Valley Coin (For coin supplies only)
Bureau of Engraving and Printing (All your paper money needs)