Edcamp is a great series of free, unconferences for educators. Edcamp comes to CT this coming August 18th. It is a great method of professional development, being run by teachers, for teachers. The Edcamp model is unique in that attendees set the agenda the morning of the conference and the sessions are not led by one person, but are rather a collaboration of both the facilitator and attendees.
This is a great opportunity to connect, share, teach, learn, and expand their personal learning network. It is schedule right before school starts, so it is a great way to get back into the "swing of things" and get some great ideas and resources for the coming school year.
Here is a great article by Mary Beth Hertz on Edcamp and the unconference idea.
Some more great conferences coming up: