There is no process. Trulia isn't a real estate company, but is just a marketing website. The listings you see here get pulled from various sources such as MLS, and county records. If you're asking about listing your home as a FSBO (for sale by owner), you can do that on Zillow, and it will eventually show up here. (Zillow now owns Trulia). But keep in mind that you get what you pay for. Your Zillow listing will have several agents' advertising info next to your listing, so any buyer that inquires about your home, go to those agents.