I had an interesting experience the other day. I am a Reiki Master/Teacher of both Traditional Usui and Karuna Reiki. I began my journey with Reiki about 10 years ago; it is a daily practice and permeates every part of my life, every day. I don't know where I would be had I not discovered it.
There are a number of things about Reiki that can vary from tradition to tradition, but one of the most important is that the Reiki symbols are sacred and therefore to be kept secret. When I received the first three symbols, I understood that I took an oath to keep them secret. There is no reason to plaster the symbols everywhere, wear them on jewelry, or put them out for all to see because without the attunements, they do nothing. Now, I have been a practicing witch for over forty years, and I take oaths very seriously, in any tradition, spiritual path, and in one's personal life, so this keeping these sacred symbols secret is a serious matter .
So, I met someone who did her Reiki training with Diane Stein. Being heavily influenced by Dianic Feminist witchcraft, Diane is considered to be one of the grandmothers of the Dianic Feminist tradition. My problem with Stein, and why I don't recommend many of her books, is because she published a book with the symbols. Her "followers" feel, as did this woman I encountered, that the symbols are sacred, but not to be kept secret, they are for everyone. This woman's attitude about Dr. Usui was rather sneering and I had to ask her how she could feel that way and practice Reiki. There were a few other things; she attunes people for free, which is certainly her choice and I have no real issue with this. I personally think that the fees many charge for Reiki training are too high. I later spoke to someone who was attuned by this woman and was told that she and her partner received no training whatsoever, they were just told to read Stein's book to page 26. They knew nothing and felt the attunements were rather worthless. They plan to study with what they refer to as a real teacher.
Now, anyone can do whatever they choose, each of us has our own path to tread. That being said, we all need to be aware that there are teachers and there are people who call themselves teachers. If you receive Reiki attunements but no instructions you loose a very important part of Reiki. If you feel that the majority of the Reiki community and the tradition is wrong when they agree that the symbols are to be kept secret, I would hesitate to teach you any form metaphysics or occult tradition. I would question your integrity and sincerity in keeping any oaths.
I realize there are people who will disagree with this and you are certainly free to do so, but keeping oaths and secrets, in occult and metaphysical traditions is a serious matter. These mysteries are not for everyone.
Blessings dark and deep!