Recommended Books - foundational (secondary source) reading for Hellenic polytheism
Burkert, Walter. Greek Religion
Connelly, Joan Breton. Portrait
of a Priestess
Dodds, E.R. The Greeks and the Irrational
Farnell, Lewis Richard. Cults
of the Greek States
Flower, Michael. The
Seer in Ancient Greece
Garland, Robert. The Greek Way of Death
Garland, Robert. The Greek Way of Life
Guthrie, W.K.C. The Greeks and Their Gods
Halliday, W.R. Greek
Divination
Kerenyi, Karl. Gods of the Greeks
Larson, Jennifer. Greek Nymphs
Larson, Jennifer. Ancient Greek Cults
Luck, Georg. Arcana
Mundi
Meyer, Marvin W, ed.
The Ancient Mysteries: A Sourcebook
Nilsson, Martin. Greek Folk Religion
Otto, Walter F. The
Homeric Gods
Parke. H.W. Festivals of the Athenians.
Pulleyn, Simon. Prayer in Greek
Religion
Zaidman, Louise. Religion in the Ancient Greek City
Also see the writings of H. Jeremiah Lewis at Nysa Press, and the books in the Bibliotheca Alexandrina series, all written by modern polytheists
A more complete bibliography can be found in Kharis: Hellenic Polytheism Explored.