First, what Wicca is not is devil-worship. Wiccans don't believe in an entity of all-evil. Wicca is a religion based on experience of Deity as male and female. Each of these rituals helps keep us in touch with Nature. These celebrations are in small groups usually called circles, covens, or groves and are usually led by a Priestess, and often a Priest.
Some groups share duties and avoid titles.
We practice magic through chants, visualizations and spells, all to focus our will on something we want to happen. We also believe that many psychic talents are real and simply haven't been studied enough by science to be catalogued as such. Wiccans for the most part accept reincarnation, not as dogma to be believed, but as fact based on personal experience. Many of us remember past lives. As one who has studied science, I know that every atom of my body once was part of something else, and I am continually losing atoms that become part of others.