OP here. Boy, this sure went a little off-topic! 
Thank you to those who offered helpful websites and books and other resources. I have been suggesting some of them to anxious parents. If anyone has any more to add, that would be great!
OP here. Boy, this sure went a little off-topic! Thank you to those who offered helpful websites and books and other resources. I have been suggesting some of them to anxious parents. If anyone has any more to add, that would be great!