Shamanism is not a religion, its the world's oldest spiritual path.
Traditionally, it is not typical for someone to volunteer for the role of shaman or to self–identify as a shaman. Rather, someone is chosen by "the spirits" to become a shaman and to act in the service of his or her community. In shamanic cultures, it is actually considered bad luck to call yourself a shaman, because this is seen as bragging, and the shamanic view about power is that if you brag about having it, you will lose it. Instead, your community recognizes you as a shaman based on the successful results that you achieve for the benefit of your clients and the greater community. Sandra Ingerman
(please note taking any classes or courses will not make you a Shaman)
Shamanic Journeying, Power, and Healing The Basic Workshop in Core Shamanism (Weekend)
ADVANCED WEEKEND WORKSHOPS - Shamanism and the Spirits of Nature
ADVANCED WEEKEND WORKSHOPS - Shamanic Divination Training