Offering the best advice I got to give : Our 10 year old has a drama session/class once a week at public school in the 4th grade. His teacher is great ! That teacher recommended a book : "Acting Antics" .... it is a theatrical approach to teaching social skills for special needs. Probably a book a little advanced for a toddler .... We are also just beginning to explore other options like sign language (for basic communication and expression of emotions) , spanish words (mostly for emotions), etc. Acting, Sign Language, Second Language ....