Once you've established your short list of child care options, it's time to schedule visits. Plan to visit once alone, then again with your child.
During both visits pay attention to how environment. How is the day structured, and are the activities age-appropriate? What is the adult-to-child ratio? (Typically, the smaller the ratio, the better.) What are the behavior management policies? When visiting with your child, watch how the caregiver interacts with him or her.
Ultimately you're looking for a fit where both you and your child are comfortable, safe and healthy.