Parents often ask me whether their young child has a speech delay. More often these days I get referrals from local preschools for children in danger of being removed from programs due to behavior problems. Many times, these young ones have an undiagnosed speech delay. Speech delays in young children are not uncommon and free help (imagine!) is available through the public school system even for the preschool aged child.
This information sheet from the American Speech Language Hearing Association gives the developmental milestones for speech from ages 1-5 as well as ways parents and caregivers can help children build language skills.
How Does Your Child Hear and Talk?.
Here are a few book resources, which link to Amazon.

