Not sure which preschool is right for your child? You can ask to audit a class so that you and your child can see if in fact you do fit in. Usually this allows you the ability to really see what is happening at the school and if it's the right environment for your child.
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.