The other day, a friend of mine found some Ketamine. Needless to say, my weekend has been a little messed up. I find K to be a little interesting, rather powerful, etc.
Preparation:
Assuming you have a bottle with the syringe type opening, get a syringe, and suck a nice measured amount into the tube. Measure based on the mg of K versus ml of liquid. Check erowid.org for good dosage measurements. Then squirt it out into a spoon and boil it off over a candle. A powdery type crust will be left on the spoon. Scrape that off and dice it with a razor blade.
Doing it
Just snort it.
Feeling it
Personally, I would consider K to be more of a novelty drug than a mind expanding one. I took it the last couple of nights, and it really made me tired afterward. It does do some strange things, that I would consider textbook disassociation, but then again, I have never tried PCP.
Be warned, it is a Schedule III controlled substance.