OneNote is one of Microsofts most underrated apps. Not only can you jot down notes or keep to do lists, you can use a stylus to do it, convert handwritten notes to text or organise your recipe collection. OneNote is available on almost every platform, making this ridiculously useful app even more relevant. Although OneNote is available with good functionality on mobile devices, the tips below are mainly intended for running OneNote 2013 on Windows and Mac OS X.