every piece of advice i've heard says to start off with nothing higher than 10x. It may be legal (for now), but it's comparable to DMT trip wise. 10x just means it's 10 times the strength of the basic leaf. A pinch of 10x, and i really mean just a pinch, should be all you need.

I say 'should' as I haven't smoked yet (I will be for the first time tonight).

The smoke is harsh, so use a bong if you have one. And try and hold for 30 seconds.