H.P. Blavatsky - Studies In Occultism
This book is a collection of 12 articles published by Blavatsky in her magazine. It provides great perspectives on hypnotism, black-white magic, psychic- noetic action, c(k)osmic mind, theosophy in general, etc. It offers a great place to start if you are researching or exploring Esoteric Character of the Gospels, Gnosticism, Astral Bodies... you don't need any prior knowledge, nor need to have read the "big books" as Isis Unveiled or The Secret Doctrine.