not really. in my experience to find lsd you should go to a music festival. that's quite a bit different, from how you might go about looking for cocaine.
This is what I usually do. Whenever I want to get back in touch with what's happening in my city I go to my local police station and request a ride along. When the day comes I just roll around with the officer asking him all kinds of questions regarding how I can become an officer just like him and also where are the "problem spots" in the city. Usually this works out well. One time I even got one to let me take a line of coke from the evidence locker in the name of drug education. Good luck.
The answer is: you get drugs from your friends. If that's not working, get more friends and try again.
If you want to know where to meet cool people, that's a topic for another forum -- try Drug Culture with a question like "how do I meet people to burn with?".