Use a REALTOR that is experienced and knows your area. We are free to buyers whether you buy a resale home or a new construction.
Talk with a lender before you start your search to be sure you are comfortable with not only the amount you are qualified to purchase but also that the monthly payment with taxes and insurance included is within your budget.
Make your list of important options and prioritize….and know that some compromise will be needed. For example if you want a large yard but want new construction…they often don’t play well together.
Drive by the home you are considering at different times during the day to experience the neighborhood and be sure it is a fit for you.
At the end of the day; I want to sell you “I’ve got to have that home” and not “I could make this one work”!