So many questions.Havent played since 2006

Hi all,

If you all don't mind I"m gonna ask some questions also because well I'm back and I'm a newbie all over again.
I got my old account reactivated and have lvl 75 BLM my questions are.

1. What expansions do I need for this void watch or abyss so that I can level up to 99.
2. Are there level cap quests like old school lvl 50 ffxi I have to do?
3.What NPC's do I talk to get this lvling stuff going?
4. A website with guides or something? I"m back and I"m like omg I don't know what to do.