Kno's post-hardware textbook platform has called the iPad its only tablet home for more than a year; it's about to spread its wings. Starting with a bundled presence on the Galaxy Note 10.1, Kno is an option for K-12 and college students who'd rather go the Android route. While all the 3D, note-taking and navigation features remain the same, there's an obvious selling point in supporting the S Pen (and hopefully other pens) to more directly put thoughts to virtual paper -- or, let's admit it, doodle in the margins. All of us, Android and otherwise, get a new Social Sharing component that lets us crib each other's notes before the big exam. We're still waiting on Kno for other Android devices as well as the already-promised Windows 7 support, but it's hard not to appreciate at least a little more variety in our digital learning.