Siberian shamans will help you
Shamanism is based primarily on individual experience, which is almost not accumulated in the form of books and canons. The criterion of truth is always the individual ecstatic experiences of a particular shaman.
Shaman as a rule can not completely control the spirit which is in him dwells or with whom he communicates, he is more of a facilitator in communicating with spirits, and sometimes it is the will of the spirits.
The shaman can explore the world (spirit), based on personal experience, and you can make maps of the universe, which, as a rule, purely individual.
For the call of the spirit or of fellowship with him used rituals ritual when the shaman goes into a trance or experiencing transpersonal States. In many regions, used for ritual tambourine or a jaw harp, some dances, and spells.
Shamans perceive the world as the interaction of spirits, and in this world of great importance are all sorts of rituals — initiation, offerings to the spirits, the fight against the spirits, etc.
Entering a trance, shamans go to travel to other worlds: the lower world (the world of spirits), the upper world (the world of gods), the middle world (the world of earthly spirits)