New to endgame and a bit lost

Bought the game a while back but school stopped me from playing it. Just got on over the weekend and picked a druid for EZMode leveling to get to 35 so that my alts will be even easier to level. Now I am 35 and... have no idea what to do. I have looked up a little for some ideas but is there any place that explains specifically the endgame dungeons? I know the raids are new and I am less worried about them until I get dungeon geared.

I also see the chessboard thing is something I need to look in to. Any good resources out there?