As we move into this new knowledge economy, the one where what you know is much more important than what you can do (for we all have to be flexible these days), the value of an education is rising ever higher. Those with college degrees make hundreds of thousands of dollars more in their lives (on average of course) than those who do not.
But as the value of an education rises, so does the cost. And that's where student loans come in. You're going to have to borrow to get those pay rises in the future. OK, so we all know about the Federal student loans but often they won't lend. You're doing the wrong degree, or at the wrong college, or you're doing a second educational program. Which is where private student loans come in.
That is, if your demand for college loans is greater than what the government wants to let you borrow, there's a whole private sector system out there available to help you do what you want to do.
Might be worth clicking through those links to find out more.