Well, I have done some money from stocks, but nothing big. First and most important thing is that you must have big enough capital when you start. I wouldn't go without at least $50k in my pocket. With $10k-50k you can start doing some forex. You can of course start with smaller capital, but don't hope for big winnings.
Think it this way: You buy $10 stock, it rises 5%, you sell, you win $0.50. You buy $10 stocks with $100,000, it rises 5%, you win $5000.
Yes, I know. That's horrible example, but you get the point, hopefully

You really can't except to double your money in one night like in the movies. Yes, it can happen, but it usually takes inside info or pretty damn good intuition