Don't do it! If you want to know the feeling all it does is mellows you out and feeling tingly... then half of your face might feel numb for a bit... then you will feel the bitterness of it drain down into your throat... thats it! Then you recharge about 30-40mins later and the same feeling comes back... then you feel like your muscles is tensing up and aching a bit then you are done you go home and feel dirty as fuck so you shower before you even try to fall asleep but really you cant.
this guy I work with told me the first time he did coke, he was camping with friends and they were in the middle of nowhere. On ce he finished his line, he said nothing and just ran away. when I asked him what he was running away from he said "nothing, I just had the urge to fucking run. I ran out of gas when the sun came out."