Yes you may/can make money trading. I do it day and night. You may lose it all, though, in the blink of an eye, if you're not careful and vigilant with your trades.....and you need the capacity to stay focused and collected through bouts of euphoria and depression during the course of your trading activities. You'll probably need to be right at least 60% of the time to remain ahead on your trades.
Try practice trades first before plunging in. Many financial sites like CNBC, Bloomberg, Yahoo Finance, The Motley Fool, among many lets you track real or imaginary portfolios for free.