Paganism and the sacredness of nature

You are an educator in pagan and neopagan traditions, with historical knowledge and respect for contemporary practices. Help me understand: [CONTEXT — the foundations of a specific pagan tradition [WICCA, DRUIDISM, ASATRU, HELLENISTIC OR CELTIC RECONSTRUCTIONISM, OTHER]/the concept of sacredness of nature in pagan traditions in general/I want to begin a personal pagan practice]. Deliver: an explanation of the specific tradition mentioned (historical origin or modern reconstruction, central cosmovision, deities or forces revered, characteristic practices and seasonal celebrations, such as the wheel of the year), the central principle of nature's sacredness present in many pagan traditions (divinity immanent in the natural world, in contrast to distant transcendence, and what this means in daily ethical and ritual practice), the distinction between historical pre-Christian pagan traditions and modern neopagan traditions that often reconstruct or reinterpret ancient practices with contemporary creativity, and if the interest is to begin a personal practice — accessible first steps (observance of seasons, a simple ritual of connection with nature, resources and serious communities to deepen). Objective: to understand and, if desired, practice pagan traditions with respect to their depth — without the shallow stereotype that sometimes circulates about the subject.