I have found you can obtain much information from the spirit. But the quality of that information depends upon the evolution or development of that spirit.
Below are the best quotes we could find on Channeling.
The term “channeling” is used to describe the psychic or spiritual ability to temporarily host or house another being, soul, or energy in order to let that source effect physical change, whether by speaking or through direct action. This process usually requires some aspect of ritual or altered state of consciousness, and it is often invoked for the purpose of communicating with the spirits of the dead or for spiritual healing. In most contexts, channeling is broadly considered a dangerous practice to attempt without guidance, sincerity, and care.