I'm sorry it's taken me a while to post an answer. Debbie is correct that Trulia doesn't accept FSBO submissions at this time. If however you are working with either a full-service or flat-fee agent or broker, he/she can submit your listing to us via the link below.
Leonard, unfortunately, you can't post your home on trulia as a "for sale y owner".
Only agents can post listings.
If you don't want to list your home with a traditional broker, you can find a "flat fee" broker who will then place it on the MLS (for a set fee) in your area....it will then be fed to Trulia.