You are asking for a "deep guide" to Volume III of The Secret Doctrine by H.P. Blavatsky.
Internet Archive: Hosts various versions, including the 1897 edition, which can be viewed or downloaded at Archive.org.
—is a collection of papers exploring the practical application of occultism, magic, and the origins of various religious systems. Where to Find the PDF
The search for "Volume 3" stems from a historical controversy. Before her death in 1891, Blavatsky was rumored to be working on a third volume. Some said it was already written; others said it was scattered notes intended for a third book to be titled The Mystery of the Century.
The Secresy of Initiates: Explaining why certain knowledge was hidden from the public to prevent its misuse.
—were published during her lifetime in 1888, the third volume remains shrouded in debate.
The Teachings on Reincarnation and Karma: Blavatsky's work emphasizes the importance of reincarnation and karma in the spiritual journey of the individual. She explains how the law of karma governs the cycles of birth, death, and rebirth, and how the soul evolves through various incarnations. The author stresses the need for individuals to understand and acknowledge their karmic responsibilities, in order to achieve spiritual liberation.
After her death, her successor, Annie Besant, published a book titled The Secret Doctrine, Vol. III.
The Lives of Famous Occultists: Biographical sketches of figures like Apollonius of Tyana and Paracelsus.