Sync Pages on my MacBook to iCloud.
I only own a MacBook Pro, which I just got over the summer. I have Pages on it, and apparently I can sync that to iCloud? I feel like I can't do that. When I log on to iCloud online, it has a link for iWork, and it requests for me to buy it again from the iTunes store (which, isn't that only for iPad/iPhone)? I just want to save my files automatically online, which is why I got Pages in the first place. So, how do I sync Pages to iCloud is my question.
Thank you.
MacBook Pro, Mac OS X (10.7.5)