The League of Arathor was originally established by the survivors of the Kingdom of Stromgarde to reclaim the Arathi Highlands from the hands of the Forsaken Defilers in Hammerfall. Today it is an organization in support of the Alliance, based out of the Arathi Basin in Refuge Pointe. They have taken it upon themselves to help supply the Alliance forces where needed, and their members include all manner of Alliance races - even though they are still predominantly Stromgardian humans.
Players can earn reputation in this faction by participating in the Arathi Basin Battleground. When you fight in Arathi Basin you earn 18-19 reputation each 130 resources. On Arathi Basin holiday weekends the required resources is reduced to 100.
As of Patch 2.0.1, you no longer get reputation for turning in [Arathi Basin Marks of Honor], they are instead used to buy PvP rewards.
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.