Information literacy is simply knowing when you need information, knowing where to find it , how to get it, how to pick out just the bits you need and then put them together (in an honest way), to complete whatever task you're doing. It could be simply planning a trip to the movies, finishing an essay for your teacher or working in a group to make your project be the one that makes everybody go, 'Wow!'.
But these days the total amount of information just keeps growing and growing. So you'll need to be able to sort through tons of data from all kinds of sources, from manuscripts and books, to databases and twitter feeds! You may want to be able to collaborate- work with other people in your class, or even in another country to solve your information puzzle! With all the new technology, who says an essay is the only way to show what you've learned?