Hi George,

Welcome to Location19.  Now that you are a member, when you sign-in you can post to the Discussion Forum, Events calendar and Blog section of Location19 and you can join any of the various groups to participate in the discussions there.  Check out A Brief Overview on Location19 Structure to get familiar with what's where.  In the tabs Be sure to check out the "All Groups - Icons" sub-tab.

To join a group such as Plymouth-Exchange Neighborhood Association click on the group, then in the upper right of the group page just under the banner picture, next to your name click on +Join Plymouth-Exchange Neighborhood Association and you are a member!  Being a group member lets you post to the group and also permits you to receive email notifications from that group about events and other info that may not be posted on Location19 itself. 

There is a ton of information you can search for and read through on Location19.  Be sure you make use of the search options.