@Leo Gura, come on, man!
Weed is not a substance that should be used for problem-solving or learning.
You only use weed to deepen your human senses, like listening to Beethoven while you're on weed — it is pure joy, delight, and ecstasy.
Or you could use weed to find out if you have paranoid tendencies, fears, and anxieties.
I'm not promoting weed but it can be used as a tool that reveals the negative aspects of your unconscious.