Each issue we list the 10-15 volunteers whose help has made our paper possible that issue. It is very important to treat your volunteers well and keep them coming back. It will take a while for the paper to catch on and build momentum, but as soon as there are a few people out there succeeding at selling the paper, others will see this and want to become involved. In the initial stages the one on one recruitment in very important. I can't stress this enough.
Posters are insufficient to create momentum.
You must talk to people and sell them on the idea. You will need to create some sort of database program that will keep track of vendor transactions. It also prints out badges. We use the clip-on conference badge holders since they're more durable. These are sort of expensive, but we buy them in bulk to cut costs.