dear god, all these yung-uns.. frightening... oh well, i am kinda young too. In my opinion, you shouldn't try much before 16, just the odd toke or drink and focus more on school, extracurriculars and such...-but then again, different people are different people and some are more mature than others at different times in their lives. I wouldn't have wanted to try drugs younger than I was, as that would have probably changed my life in ways I wouldn't have liked.
alcohol-15, tried younger, but drunk at 15
weed-15-not a reg. user till 17-18
ecstacy(not nec. md**)-17 ~7-8 times
acid-17 ~7-8 times
nicotine-18 (hookah only)
shrooms-18 ~7-8 times
nitrous-18 several weekends we'd kill a tank
morphine-18 once intranasaly
salvia-18
ghb-19 two times
There is still a lot out there to try. I have also used all sorts of minor herbs as tea/smoking blends to obtain various states-blue lotus, ephedra, passionflower, scullcap, yohimbe, others, all at 18 and older.