1.17. One more question: where does Wicca come from? How old is it? I've heard some people say it's the oldest religion in the w

That depends on who you ask. The precise
age and origins of Wicca are a topic of much controversy, both within
and outside the Wiccan community. Most people agree that Wiccan belief
and practice is a blend of old and new — that is, that some aspects of
it are derived from pre-Christian paganism while others are clearly of
19th century or later origin — but where disagreement sets in is in
exactly how much is new as compared to old, and whether the older
elements were inherited from an existing tradition dating back to
pre-Christian times, or were reconstructed in the early 20th century by
people who wanted to bring back "the Old Religion", even if they had to
reinvent it to do so.

Entire books have been written on this topic, and
we don't intend to try and settle it here. Suffice it to say that
asking this question of a group of Wiccans in a social setting is a
good way to spark an argument that will last all night, and when it
comes right down to it, the one thing they will all agree on is that
ultimately, the most important thing is that Wicca exists here and now, not how it got here.