SiteSell offers a free affiliate program selling its Internet resource books. Has extensive training (manual is over 200 pages long) and marketing assistance (offers wizard-like help in creating doorway pages and other marketing tools). Check out the link to the 5 Pillars Affiliate Program.

Cognigen- Online business offering many services people use everyday. Free to join.

ClickBank Affiliate - choose one or many of the great products and services you can promote and earn 25-75% commission. Many people have done very well promoting ClickBank product.s