Touch Blue Sky offers two different playgroup series - Playgroup Boom and Playgroup Zoom. No need to take them in order; you can start with either one; this is the Zoom course. Both Playgroups include the essential basic starter signs but vary in the more advanced vocabulary. Having an alternate series is perfect for increasing your signing vocabulary, when your baby signing ability grows, or you find you would like a refresher course. It is recommended that parents enroll in the Introductory Workshop prior to taking a playgroup series. Babies are welcome but not required to attend. The price is for one adult and on baby; you can register a partner for an additional $40.