But I also have a lot of handwritten notes and hints in there, what should I do with them?
Scan them, too - and make sure you give the file a descriptive name. I only use ProjectNameNotes#.pdf because I rarely have more than five pages of scattered notes for a particular project, but you could use a more specific naming convention.
If you have lots of handwritten notes that belong to many different projects, I'd look into a better way altogether to capture that information. For example, you could make a wiki of your favorite keyboard shortcuts or tips and put it on your Tickler to review it every three months.