MMO Vet / New to FFXIV Questions

[Xynergy]

Hello,

I recently started playing FF, and had a couple quick questions. First off, I've been playing different MMOs for years, so I have the experience to pick things up rather quick.

1). Is there any mentors (Diabolos) that could assist me with more in-depth questions.
2). How is the PvP scene? I've mainly PvPd in almost every other MMO.
3). I've mained support / healers in every other MMO for the most part and was wondering how is their standing here
4). Are there QoL addons / websites that help if one gets stuck?

I have tons of other questions but don't want to take up loads of forums space.

Thanks,

Xyn