One of the primary reasons to stay on Facebook is not to miss an invite to a party or other event. It's worth unpacking that notion in the first place: If your friend or family member doesn't realize you're not on Facebook, do they really value your presence at the event they're planning? If someone genuinely wants you somewhere, they'll find a way to invite you, Facebook or no.
Looking for a guild that accepts "newish" players into the guild and which is willing to teach the game mechanics. Currently I'm lvl 84 (not so new I guess, but still I can't really see myself as an intermediate). I'm playing Winter Orb Elementalist Witch, currently I'm mapping most of the time. My objective with my current character in this league would be to get to the Shaper. Still a long way to go but hopefully I'll get close to him.