1) since your 15 they'll probably just take it and tell you to get the hell out of there. Or they might be a dick about it since your so young. the ny laws are here
http://www.norml.org/index.cfm?wtm_view=&Group_ID=4554

2)fuck papers, use a bowl

3)Black Domina

4)lol, one won't do any thing. You need about 3.5 grams for a nice trip.
check out www.shroomery.org and erowid.org