Buy extract that is standardized.
10x times will do something to ya. Doesn't last very long when you smoke it, the effects that is. And it is in no way comparable to weed. Never has been for me anyway.
The most common thing people experience is a "splitting" of reality, like suddenly it all unzipps or tears apart, that is if you smoke it properly and the right amount. The most important thing to do is to hold it in as long as you possibly can. To the point you start feeling wierd then exhale and directly go into the next hit, try not to inhale fresh air between hits.
2-3 hits will give you somethin.
I do it maybe once every three months