Shamanism is a very old tradition and set of beliefs held by communities of people. Shamans enter altered states of awareness to connect with spirit ancestors, people and animals. They teach others this wisdom as well as use their gifts for healing others.
Shaman actually means spiritual healer or one who sees in the dark.
Shamans help by recovering soul parts and thus removing illness to make a person complete again. They also clear negative energies and help with important spiritual quests. They are very highly regarded and revered by all their communities. They have a great responsibility and use it for the benefit of all mankind.
There are several paths of Shamanism offered here including the following: Munay-Ki Rites and Ama Deus Shamanic Healing.