I download a lot of free ebooks. I learn best when I can read information, so I have a folder in my Dropbox for this very reason. Now I can carry my library with me remotely.
Are you using Dropbox?
It's an essential part of my workflow -- my paranoid workflow. Whenever I positively, absolutely CARE about a file, I save a quick copy to Dropbox. If all else fails, I count on Dropbox to keep my most important files safe.
I've been using Dropbox for a long time, but the above article gave me a few additional ideas on how to get the most out of it.