Meetups. User groups. Study groups. Mastermind groups or peer mentoring groups.<p>There are different kinds of groups and teams outside of work environment. Have you started any?<p>What is your advice for starting and growing such group? How to make group healthy in the long run?<p>There is an endless supply of books about building and running successful teams IN workplace. Could you recommend any good resources for running groups and teams OUTSIDE work?