I used to keep a pad and paper - now I can snap a picture with my iPad and then annotate on it with the Pencil in my own writing. Writing is far more effective

I used to keep a pad and paper - now I can snap a picture with my iPad and then annotate on it with the Pencil in my own writing. Writing is far more effective at retention than typing so I stick with it. It's not as convenient as writing directly in your own book, but it's pretty darn close. And if it's a subject of importance I'll just get my own copy of the book. I recently re-discovered independent used book sites like abebooks.com - it's a challenge to not go nuts :)