For those of you coming back/rerolling and unsure the quickest way to gear up the best way to get to ilvl 700 fast and painlessly is through Hydra Ashran premades. How to join (This is for Horde):
1) Go to Warspear and open your LFG group tool -> Player vs. Player -> Premade Groups -> Ashran
2) Look for anything that has a number in the name (Ashran 8, Hydra Ashran 2, etc... Hydra won't necessarily be in the name). You'll know it's a Hydra group because it will say something about needing a password in the comments.
3) Go to the vent channel at wow.publicvent.org, port 4135 and find the channel number corresponding to the premade group number in step 2.
4) Look for the PW for the premade in people's comments in that channel or go into the channel and ask for it if you don't see one
5) Go back to LFG, click join, put PW in your comment, wait to get invited, then run into Ashran from warspear and accept the queue.
6) Just wait to get in and run around stomping the alliance for free gear.
This is very noob friendly, no gear requirements, and the runs are very smooth and fun.
If there are no premades up the next best thing is to go to Tanaan and fly around farming rares/chests/treasures for baleful gear and apexis shards to upgrade said baleful gear.