My best advice for any parent that is given news that their child is autistic is to start educating themselves. There are literally hundreds of books on autism and more seem to be published every year. Chantal Sicile-Kira wrote the book, Autism Spectrum Disorders: The Complete Guide to Understanding Autism, Asperger's Syndrome, Pervasive Developmental Disorder, and Other ASDs. If you are a parent, caregiver or just a concerned individual wanting to learn more about autism, I suggest this book. I continue to further my autism education by reading a variety of books on the subject, but I was glad that this was one of the first books I read. It is a book that I reference a great deal, professionally and personally.
Sicile-Kira organizes the book logically and gives good, easy to read information about a subject that can be daunting to any parent who is just beginning to do their research. She began as a professional working with the developmentally disabled and then became a parent of a child with autism. The book gives not only great information, but also personal anecdotes and what she entitles "Food for Thought", writings and knowledge from others in the autism community.
I recommend that this be a book you keep for your own personal library for you will use it as a resource for years to come. Sicile-Kira has another book out regarding ASDs and your teenager. Both books are available at Amazon.