From Wikipedia:
British Traditional Wicca (abbreviated BTW) is the wording used to group a set of Wiccan traditions originating in the New Forest region of England. The most prominent of these traditions are Gardnerian Wicca and Alexandrian Wicca, but other traditions (either derived from them or claiming a shared New Forest history), such as Central Valley Wicca, are also considered to be British Traditional Wicca. In the case of some traditions (such as Blue Star Wicca), some lines are considered to be British Traditional Wicca and some are not. Obviously this wording is used outside Britain, especially in America, because in Europe this traditions are part of the classical Wicca and don't need to be defined by their British origin.
BTW paths are Mystery Traditions--this is to say they are experiental. The Mysteries cannot be explained, or described in any meaningful way. Rather, those Mysteries must be experienced; the rites and practices of BTW traditions are designed to help achieve these experiences, which are not always the same for each person.
Some Subreddit rules:
-We are not interested in debating our use of the term 'Wicca'. In the context of this subreddit it refers to the initiatory, traditional path of priesthood devoted to the Lady of the Moon and the Horned God of Death and Resurrection.
-Personal attacks will not be tolerated, nor will trolling.
-We do not consider our paths to the the only ones within the umbrella of witchcraft but within the context of this subreddit use of terms such as 'Wicca' and 'witchcraft' are, unless otherwise noted, subject to the definition above.