For wood get some spiral router bits, not end mills. End mills are designed for cutting metal. While they'll work, you might as well use the right tool for the job.
Here are two places I've bought bits from:
Whiteside Router Bits from Woodworkersworld.net--Solid Carbide Spiral, Compression Router Bit
MLCS solid carbide router bits
The standard bits I always use are 1/4" straight, 1/4" ball nose, and 1/4" v. For bigger stuff I'll use a 1/2" straight. It depends on what you're doing, but those will let you do a lot of stuff.