Everything below is to help you with being the great High Priest you are destined to be. Make sure to check it out to make sure you're up to date...

Included are the Icy Veins guides for the three shaman specs in Legion...

Restoration:

Elemental:

Enhancement:

Here's the guides for the hunter class, including gems/enchants, talents, rotations, etc.

Beastmaster:

Marksman:

Survival:

Leveling from...

Icy Veins has their Mage Class guide up (along with other classes). Take a look through for your spec and see if you're missing anything!

Arcane...