Enquire away.
I may sound a bit pissed off sometimes but that's more to do with the fact that a lot of the time I end up repeating things (such as the definition of paganism, I've just put it in the ask a pagan thread but it might be easier to carry on the conversation here so if you want to reply to the post I put over there, I don't mind you quoting it here) so I go on auto-pilot .
Wicca is a pagan religion but there are loads of different pagan religions apart from Wicca.
Science is fine by me.
No, magic. I hate the spelling magick. Just makes me think of the "I've read a Silver Ravenwolf book and I'm so cool and mysterious and going to rebel against the world and practise magick!" fluffy bunny teenagers and it annoys me.
(I get that a lot of people use that spelling so it doesn't get confused with stage magic or with Harry Potter magic (for example) but I tend to think that the people I'm talking to are intelligent enough to understand that my magic has nothing to do with Harry Potter or with stage magicians. )
I leave offerings because I've taken something. By offerings it could be something as simple as an apple core (well, half-eaten apple, I never eat much) so that it can then decompose and then that might help the plant regrow, or animals or whatever.
Crystals.
My view on crystal healing is that I cannot understand how something that has such a destructive mining process (not just environmental either, the conditions for the workers are terrible) could ever be used for healing.