The Golden Dawn is perhaps most well known for causing a resurrgence in interest int eh occult. More in particular rosicrucianism, hermeticism, and tarot. Famous members of the order include Aleister Crowley and Israel Regardie.
Most of the books you can find on the Golden Dawn are in fact written by Doctor Regardie. You can imagine how lucky we are to have found that the Grey lodge is offering most all of the Golden Dawn Audio series free for download via bittorrent.
His voice is truly captivating; as are the lessons he has to teach. Drop them on your mp3 player and go for a walk because it is a fantastic listen.