I have only been involved in magic for several months, but really enjoy and focus on coin magic. Here are some of the resources that I have found very helpful.
Books/Lecture notes:
Modern Coin Magic by JB Bobo
Expert Coin Magic by David Roth
Coin Magic by Richard Kaufman
Anything published by David Neighbors
Videos/DVDs:
Expert Coin Magic Made Easy series by David Roth
Complete Introduction to Coin Magic by Michael Ammar
Easy to Master Money Miracles series by Michael Ammar
Revolutionary Coin Magic by Jay Sankey
Basic Coin Magic series by David Stone
Websites:
Dan Watkin's Coin Vanish:
http://www.coinvanish.com
The Coin Purse:
http://www.coinmagic.com
For serious knucklebuster/coin workers:
Palms of Steel DVDs by Curtis Kam vols. 1,2, & 3
Knuckle Busters manuscripts by Reed McClintock vols. 1,2, & 3
Coin Ovations & Coin Patriot DVDs by Reed McClintock
The Coinjurer DVD by David Neighbors
Coins on Edge manuscript by Kainoa Harbottle
Gaffed Coins (in order of excellence and expense):
Todd Lassen
Roy Kueppers
Johnson Magic Products
If that isn't enough to bankrupt you and keep you busy for a while, feel free to PM me.
Scott