http://www.youtube.com/watch?feature=player_embedded&v=Av_Us6xHkUc#at=43
http://www.youtube.com/watch?feature=player_embedded&v=Xipwwt7883w#at=17
http://gamelogos.tumblr.com/
http://disinfo.com/2012/12/a-beginners-guide-to-sigil-craft/
http://www.youtube.com/watch?feature=player_embedded&v=p6uXJWxpKBM