How can I start learning about esoteric practices and beliefs?

It really depends on what you're hoping to gain from your exploration. From my experience, the ultimate goal is often self-improvement and a deeper spiritual connection. If you're looking for some solid starting points, I’d recommend checking out the 'Corpus Hermeticum' and 'The Kybalion.' They're great for beginning to understand Hermeticism and how it might apply to your life. As for Gnosticism, just a heads up that it’s more of a modern construct stemming from Plato’s work than an ancient practice. And when it comes to Saturn worship or the likes of Baal and Moloch, I'd steer clear of forums that may lead you down some pretty dark paths with untrustworthy advice.

If you're interested in esoteric knowledge, 'The Kybalion' and 'The Law of One' are really good starting points and they're easily accessible online. They cover a lot of foundational concepts you might find useful on your journey.

You might also want to give 'The Perception Deception' a read. It covers a lot of intriguing ideas related to perception and reality in the context of esoteric knowledge.