Aether Force

To keep it accessible, here is the main link for all things Marcel Vogel: https://icedrive.net/s/2fG81iYfwXVaztu2ZZ7y8YA3Xi41

Master Choa Kok Sui - Meditation On Twin Hearts With Self-Pranic Healing

To supplement Vogel's work is the practice called Pranic Healing by Master Choa Kok Sui. His crystal are rounded at the end, so the practitioner does not absorb as much of the patients energetic debris. Here are some books and articles on Pranic Healing.