The ever awesome OneNote application is now available for all major platforms (PC, Mac, Windows Phone, iOS, Droid, Web) at no cost.
Check it out at http://www.onenote.com
Also check out the many Apps that work with OneNote: http://www.onenote.com/apps
And, check out these great OneNote tutorials: https://www.youtube.com/user/OneNoteTutorials
-Carl