
1. The obvious is really the only difference. Other minor differences vary from FC to FC. For example, some RPing FC's may do less endgame progression than other non-RP FC's, while others may still be heavily into PvE content.
2. Once more, depends entirely on the FC. But generally, RP FC's serve as a place for your character to meet others, and generally the FC has an overarching plot than you can choose to participate in.
3. I would recommend Harbingers of Dawn, personally! But you should browse through the linkshell hall and decide what bests fit you OOC, as well as what best fits your character IC. But as there's no downside to joining an FC, I would strongly recommend joining one.
2. Once more, depends entirely on the FC. But generally, RP FC's serve as a place for your character to meet others, and generally the FC has an overarching plot than you can choose to participate in.
3. I would recommend Harbingers of Dawn, personally! But you should browse through the linkshell hall and decide what bests fit you OOC, as well as what best fits your character IC. But as there's no downside to joining an FC, I would strongly recommend joining one.