a. Do it yourself and spend a lot of time going through multiple web sites to find an opportunity to bid on.
b. You can get registered with a pay for bid site.
c. You can get registered with your local PTAC, who offers you a link to over 2,500 bid board sites, creates a profile of your company and then sends you bids daily to view and bid on.
Including county bids: USABID from Florida.
All at no cost!. It's your business decision.