Most local groups in Maine post on local Facebook pages. Just generally speaking it's a good idea to be aware of the local pages even if you aren't on Facebook yourself. Just mentioning it because to someone who doesn't normally use it, it might not be obvious. Another source of local groups and activities are the small penny saver type local papers that run weekly listings. Most have an online presence these days. A google of the town or area you're moving to should bring these up.