It requires your own google plus account. Once you have one, you have to add Arrowhead equipment into one of your circles. Click on the google plus social icon near the top of the arrowhead equipment web page. After that, the hangout notifications show up on your main google plus screen.
Good judgment comes from experience, and often experience comes from bad judgment. - Unknown
Eastern Great Lakes Trip Planning Announcement thread
. Subscribe to keep informed on upcoming group hangs in this area.