There are as many beliefs as there are groups of wiccans and solitary practitioners. Wicca is a polytheistic religion (2 OR MORE deities). We are not all NEO nor are we all NEW AGE (which is a misnaming since NEW AGE was what Shirley McClain called what she did which is channeling spirits, another thing WICCA is not. Not all are witches since you need no religion, deities nor Christian/jewish demons, devils nor Satan to do magic. You just need a knowledge of herbs, essential oils and how to use that and things in nature to change things in life. Unfortunately the only ones who have written about Wicca were also witches who wanted to get published. Not saying you can't learn from them, but they write mostly about Magic and call it Wicca. There is a basic rules and laws which you live by, you honor your deities, follow your sabbats and protect nature, the earth and all within it. A true Wiccan does not go quietly when he/she protects. We are not meek nor fluffy bunnies. We are humans who have our faults and failings like everyone else, but I have found that we try to respect the beliefs of others even if we ourselves don't believe them.
I hope this helps
Wicca 45+ years