So, I'm planning to run a DnD 5e campaign for some friends (maybe GURPS 4e, but, whaever), and since I played Wow for a long time, I think it will be best for me, as the GM, to use Azeroth as the setting of the campaign. I´ll probably feel more confortable with Azeroth than any other classic RPG world (Forgotten Realms, Dragonlance, or even places like the Middle-Earth or Westeros). Since WotLK was my favorite expansion, I'm inclined to put the players at this point in the timeline, on the emergence of the Scourge.
The think is, I'm not a pro on the Azeroth lore. And since wow has such a big large amount of material regarding its own lore, I need some kind summary of this period of time to better plan the whole campaign. Things like:
1. How did the horde/alliance discovered about the scourge for the first time? I heard that, ingame, it was some kind of invasion on the major cities, right?
2. How did both factions learned about the Northrend, a continent until then, hidden from the rest of the world?
3. What exactly both factions intended with the separate expeditions on Howling Fjord and Borean Tundra? Why they marched Northrend in different battle fronts?
4. At what point, exactly, both factions had to join forces to be able to defeat the Scourge?
My plan is to put the party together with the great heroes of the Alliance during their assault on the frozen continent. My luck is that any of my players had ever played Wow, and probably not even Warcraft, so I don't have to be 100% faithful to the lore.
Ps.: Sorry for any grammar error, english is not my primary language.