What property? You didn't give an address, but even if you did - you need to find an agent who can represent you.
Trulia is NOT a real estate company!!! - they only compile listings from other sources, and post them here - agents are responsible for their listings, or........any local agent can advise you in regard to the home you want to bid on.
I am curious - Have you seen it?????
If you have, you can ask that agent to prepare your offer.
Have you been pre-approved for a loan as yet?
If the answers are no, you really do need to sit down with an agent and go over the process.