Similar books to the Ra material

[AnthroHeart]

Pendulum is probably the best next to direct channeling.
You talk directly to your subconscious that way.

I'd tend to agree. You can still muddy your results with your own ego mind if you aren't disciplined, but it won't open the door to anything outside yourself to bother you.

Agreed. It will test you in the beginning with false answers to make sure you are committed.
If you can get ego out of the way, it's the micro-muscular movements that actually move the pendulum. Not really energy per se.