An official website of a branch of the A∴A∴. It lists a thorough syllabus and provides all necessary reading materials.
www.astrumargenteum.org
A wide collection of occult material ranging from Thelema to Satansim. One of our longtime favorite resources.
darkbooks.org
A classic of the Thelemic community Thelmistas provides a wide range of materials and tools including additional links to further resources. The site also boasts one of the few operational astrological clocks of which I am aware.
www.thelemistas.org
Our favorite resource for all things grimoire and or old school middle ages magic. Topics range from Solimonic magic to medieval tombs of varying notoriety as Le Gran Grimoire to the works of Agrippa.
www.esotericarchives.com
Another great resource of Thelemic material it contains a few unique offerings, including a presentation of numerous color scans of the original Equinox volumes revealing their exquisite color and detail.
keepsilence.org
A resource with information on a wide range of secret societies. The site lists primarily masonic orders, however, it also divulges the rituals of numerous Greek Fraternal societies.
www.stichtingargus.nl
A great collection of open source books that have been reworked and republished for distribution. It contains some excellent material on philosophy spiritually and metaphysics as well as plenty of none-spiritual resources.
www.aliceandbooks.com
Another great collection of works which are now in the open domain.
www.globalgreyebooks.com