The Kherete was a group of energy workers many of whom had been drawn together by the energy work group known as House Kheperu but who weren’t actual members. They formed together and made a forum that I once posted on. One of the most informative guides on energy work was provided freely by them on their website. I’d like to include it here so it isn’t lost to the winds of time.
A lot of stuff is interwoven with energy vampire material. It doesn’t matter whether a person is an energy vampire this material works either way but it is related to the Psychic Vampire Codex by Michelle Belanger. Something else really worth reading.