There are a couple of places I frequent to get my RRT fix. first is the official Palladium forums:
It's got a good community and is picking up now that the game has started to ship.
RRT player Jaymz on those forums started his own forums after the original Tactics boards shut down:
Like the Palladium books community this one is starting to pick up some.
Finally on Facebook there's the Robotech Tactics "Unofficial" FB pages, over 1000 members and growing!
Rooting around in these locations will help you identify local players to your area. On the forums and occasionally linked on the FB page are some other awesome hobby blogs and I encourage you guys check those out!
Finally for watching episodes online you can go to www.gogoanime.com and search Robotech!