The official Twitter account for AoH can be found here. Keep an eye on it since it will keep you fairly updated on when new shops or official events may be occurring!
AOH ARGS
Alternate Reality Games using AOH as the basis
Happenings and News
For all the Latest Current Events!
Event Characters
People you should know.
Alterers
People that'll fix things up for you.
NPC Characters
Those people highlighted in yellow that you see standing around the lands.
Scrying Bowl Visions
Find out what's been going on, and possibly what may happen too.
Player Character Plots
For people who are organizing player plots and want people to know what is going on.
Event Archives
Read up on past events and relive old times.
Newsletter Archives
Official Newsletters sent by e-mail by the HX/AoH team.
The Library of Grigoros
The contents of the hidden libraries of Grigoros.