Necessities for the Players

For the new campaign, these materials would be helpful:

Players' Handbook		this is required
Class-Specific Handbook		strongly recommended
Barbarians and Druids Clerics and Paladins Fighters and Monks Bards and Rogues Wizards and Sorcerers
D&D Gazetteer		strongly recommended
Living Greyhawk Gazetteer		more information than Gazetteer, but not necessary
Greyhawk Player's Guide		older, hard to find, but a great resource

EBay is a great place to find these items nearly new, and cheap!

The Dungeon Master's Guide, Monster Manual, etc. are not necessary for players, but feel free to get them if you wish.