Mists of Pandaria: Jewelcrafting Overview (Updated for 5.4) - Wowhead News
Sockets and enchants on the character screen. My friend couldn't find an add-on that does this while keeping the default UI, so he made his own. In case more people are interested:
Restoration Shaman PvP Guide, for Patch 5.4.2 - GotWarcraft.com
WoW - Patch 5.4 - Frost Mage PvP Guide - Builds, Stats, How to open and more! - YouTube