Short answers, pulled from the story.
A small group of people in the United Kingdom began using the phrase New Age to describe their spiritual activities in 1974. This label did not exist within their own community until scholars and journalists applied it from the outside.
Emanuel Swedenborg professed communication with angels and demons while Franz Mesmer wrote about animal magnetism running through the human body. Helena Blavatsky co-founded Theosophical Society in the late 19th century and published Isis Unveiled in 1877.
Woodstock festival advertisements from 1969 used terms like New Age and Age of Aquarius while The Esalen Institute opened in Big Sur, California in 1962. Findhorn Ecovillage was founded in Moray, Scotland in 1962 by Peter Caddy and others.
Researchers found 600 people regularly attended New Age activities in Kendal, Cumbria representing 1.6% of the town's population. They extrapolated around 900,000 Britons participated regularly in such activities.
Reiki emerged as one of the most common alternative therapies within the movement alongside acupuncture, biofeedback, chiropractic care, yoga, applied kinesiology, homeopathy, aromatherapy, iridology, massage, meditation, visualization, nutritional therapy, psychic healing, crystal healing, music therapy, chromotherapy, and reincarnation therapy.