get in your car and drive somewhere it's legal...
i get mine from the pipeshop...
5x is fine for me, 2 puffs, held in for 30 sec's a piece will have me trippin out for a couple of minutes..... i've heard the really strong varieties are insane, as in not enjoyable, this comming out of hardened ravers who are used to candy-flippin every weekend......
it depends on how deep you wanna go... for you're first time don't exceed 10-15x... unless you wanna be drooling, rolling on the floor, and scared-shitless...