Investing should be one of the last things you look at for a stream of income (of course, when you start to get a bit of money you'll be looking at every opportunity based on the return it can get you). Easy investments lead to slow growth, which can be good over the long term. The few real highly profitable investments are hard to find and difficult to tell apart from the ones that will lose all your money.
Until you have a few hundred thousand at least it's hard to produce a real income just from investing. To get to that point you're better off investing your time and creativity to come up with something that's not being done well enough yet and do it right. There's lots of possibilities there that don't require you to put up a lot of money.
You really need things that are hard to do - they're usually not that bad but even a little difficulty or uncertainty scares of most of the competition
