Here are some sites that I have found useful.

A nice date base of the items in FFXIV. Very good for finding mob from the Hunting Journal, also has an awesome interactive map.
http://xivdb.com/ : By the same people as wowhead

Nice website to check server status
FFXIV:ARR Server Status

Good website for general info
FFXIV ARR: The Ultimate Starters Guide

A good wiki, by the same guys who did FFXIclopedia:
Gamer Escape's Final Fantasy XIV (FFXIV, FF14) wiki

It's great that these are popping up already! I'll definitely use that starters guide.

heres another
Botany in FFXIV:ARR Eorzea Reborn