To find a good preschool, ask those that you know where they sent their kids. These word of mouth recommendations can help to serve a good or bad way to finding a school. It's great to learn both the good and the bad from others that have attended the school beforehand.
Preschools range in costs for attendance. Some are much more affordable than others. If costs are a concern for you, find out if there is any financial aid or financial planning available. Breaking payments into monthly payments can be helpful to lower the costs.