Be prepared for counter offers. Don't let the pressure get to you. Remain patient, and let your sales associate act as your liaison with the seller or the seller's agent. You may need to be flexible on price, closing date, appliances and repairs.
Beware of putting contingencies in your purchase agreement. They weaken your offer. However, if you currently own a home, your offer may need to be contingent on it selling. Or, if you're uncertain about the structural integrity of the home, you may want to have the contingency of a home inspection. Just be aware any contingency could take you out of the running if a non-contingent offer is presented.