Consider using a buying agent. Estate agents always act in the interest of the seller, because the more money they get for a property, the higher their commission payment. A buying agent can act on your behalf and make sure that you acquire your dream property for the cheapest possible price.
If you are a first time home buyer, it is a good idea to not see more then six or seven homes at a time. It might be tempting to try to see more at once, however, if you do see to many then it will make it tough for you to take it all in. It will also make it to hard to remember everything.