Could write a novel on buying dope around this country... Basically you have to go to where the Junkies go. Which is dangerous, 95% of the time. You need to offer up a bag to a junkie, get me 2, and I'll buy you one, kind of thing. Then watch where he goes.
The dope users in "better areas" usually don't share their connections, becasue when he runs out, or gets busted, they run out. And they know what that means for them.... sick city!
Chicago used to have this weird Heroin Base that you had to break down with lemon juice or vinnegar. Very nice, had a strong smell to it like tar heroin does.
San Francisco has the easiest to find, and buy, and the cheapest, for a beginer. It is Tar there, at $10 for a little ball of it, wrapped in a peice of bread wrapper, put in a ballon. First time I scored there (tenderloin) I got to the gas station bathroom to do it, opned up this ballon, and the bread wrapper part came out, I thought for sure I had been beat. Then opened the bread wrapper (1" sq) and saw a littel blackish turd, and KNEW I had been beat. Shot it anyway...... MMMmmmmm.... Not Beat. Went back and got Ten more....
You could always pick up a nice OC habit, and then get on a Methadone clinic. You'd get all kinds of connections there. Find an older guy. Get him to tell you about his life. This won't help you score, but might get you to change your mind......