After reaching level 100, I picked up gear with item-level >= 620 from around Draenor. I also got some from LFR and heroic dungeons. But now I don't know what to do. I've heard you can get even better gear:
- Doing harder raids (How? I don't see a difficulty-option in raid-finder)
- "World bosses" (who and where are they?)
- Buying with various currencies (How do I get them? Who do I buy from?)
But I don't know how to do those. And is there anyplace else to get better gear?
(I've seen this question which appears to be the same question by the title; but it's actually asking what stats to prioritize)