Hi John nothing to do to join, you can scroll down to the clubs and events section to see the different groups, pick one or several and get involved. 
Here is a good show to go to in your backyard to meet quite a few of the people on here. 
http://www.rctruckandconstruction.co...478#post141478
This show is in April just up the road from you. 
http://www.rctruckandconstruction.co...ad.php?t=11044
Show up, bring your trucks and or construction equipment and have fun!