Aurinor is a world with blue grass and trees on floating islands with seemingly nothing but clouds below them. There are mysterious temporal anomalies on the islands. In Legion an Invasion Point connects Argus to this target location. The land resembles Shadowmoon Valley before the destruction of Draenor.
Small blue lights float around the world. While this is likely a magical occurrence, they could be some type of insect or other life form.
Where to start? Well, somebody would say all the way back to Warcraft I (aka Warcraft: Orcs & Humans or the First War), or maybe Warcraft II (aka Tides of Darkness or the Second War up to and including Wrath of the Lich King, Warcraft III is the best place to start. Also, this game then elicits more interesting questions. For instance, how Illidan Stormrage became so hated or where the Scourge started. You will learn all the history and geography of the Warcraft with our help and dedication.