What is the definitive guide to Hermetic readings as per Ariel Gatoga?

Ariel does not name a single “definitive” book or guide as the canonical source for Hermetic readings.

For structured Hermetic study, Ariel often points students to:

• The Kybalion (for the seven Hermetic Principles)
• The Hermetica: The Lost Wisdom of the Pharaohs
  alongside Ariel’s own Hermetic lecture series and blog posts (for example, the Principle of Polarity article that accompanies the “How to Use the Law of Polarity” lecture).

Are you looking for a reading order, or a short core list to start with?