My 4 year old son is quite shy -- he is often afraid of kids at the playground and only engages in parallel play occasionally. Can anyone recommend any picture books or Mr Rogers / Sesame Street episodes on interacting with other kids? I think that he needs examples of the skills required to talk with other kids, as well as examples of shy kids having fun with other kids. As a side question, I don't understand how lemmy works. How do I see the c/parenting groups on all of the other lemmy servers?