Cooperatives are formed in response to an economic need, such as providing marketing, processing, bargaining, manufacturing, and purchasing services that are not currently available or are available only at an excessive cost.
USDA How to start a Cooperative 
The Decision to Start material for training of co-operative advisers 
Starting a Cooperative Business Plan Template 
New Coop Guide 
Start a co-op UW 
how-to-start-coops-new 
How to start a co-op 
How to Build an Effective Nonprofit Board-The-Complete Guide 
early co-operation 
Cooperative Startups & Education