Local head shops?
Clubs in general are a good starting ground for finding quite a few drugs.
Colleges?
Univ.!?!?

You make it sound like your an old man trying to score a little pot. You just graduated! go to local hang outs of highschool teens during lunch. Youth know quite a bit about where to find things

Co-workers? depending on your job that is...

And in most cases you'll find hookups in the least expected places and times.
Good luck on the quest and don't get discouraged.