dude just find someone who smokes it and ask if you can try it, they'll prolly let you hit it, other wise a dime bag is good for one person who is a novice or a half eigth for you and a friend or two would be good enough.

The first time i did it i did 2 or 4 bowls i cant quite remember but i got pretty high and was blown away by weed, now i do it all the time