Open Question: How to find a dealer?????

I have been experimenting with drugs recently. I'm a 15 year old freshman at a public high school in Oregon. I used to buy pot from a friend, and it was awesome, but he got caught selling and ratted me out. After we got back from being suspended, he dropped out of school. I'm having a really hard time, and get teased for numerous things every day. I'm quiet and nobody really knows who I am. I'm looking to find dealers who will sell me pot, shrooms, LSD, and/or ecstacy. Any tips on how to do this? I can't get caught again, my parents kicked my ass when I got caught the first time. Thanks!!!