Leveling:
Horde Speed Leveling Guide
Alliance Speed Leveling Guide
TurnIn and AutoTurnIn both addons free you from the hassle to accept and turn in quests. You only need one.
Leveling Addon probably not as fast as the guides above and requires TomTom
Best spec for leveling is probably Frost with Ice Nova and Incanters Flow. For Arcane and Fire similar is also true take the nova talent and Incanters Flow. You probably want to use http://www.wowhead.com/spell=86209" target="_blank or http://www.wowhead.com/spell=61205" target="_blank for your respective Spec.
Treasure Macros requires TomTom
Treasure Addon 1+2 First link is the base addon and second link contains the actual locations
Leveling Preparations Guide
Garrisons:
Stormspire guide to gold making with garrisons
Askmrrobot Info Sheet
Gearing:
Speed gearing for Highmaul
Spreadsheet for mage gearing
Legendary Questline Info Graphic
Highmaul Raid Schedule
SourceAs with raids in Mists of Pandaria, we're staggering the unlock of difficulties for the first raid in the expansion. As with those prior staggered unlocks, our goal here is to let you have fun playing, leveling, and to have time to explore and prepare yourself and your raid group before jumping into this first raid. We'll share information on the unlock schedule for Blackrock Foundry in the future, but are currently expecting it to unlock approximately 8 weeks after Highmaul.
December 2, 2014
Highmaul opens with Normal and Heroic difficulties accessible.
December 9, 2014
Mythic difficulty and the first wing of Raid Finder (Kargath/Butcher/Brackenspore) unlock.
December 16, 2014
Raid Finder Wing 2 (Tectus/Twin Ogron/Ko’ragh) unlocks.
January 6, 2015
Raid Finder Wing 3 (Imperator Mar’gok) unlocks.
Notify me here or on IRC if anything important is missing or if you have another source of good info.