I use instapaper to store any articles I want to read later and I periodically open it up on my iPad to read things I've saved. I have evernote notebooks for s

I use instapaper to store any articles I want to read later and I periodically open it up on my iPad to read things I've saved. I have evernote notebooks for storing research notes plus occasional phone pics of book pages when I'm reading things on paper. Sometimes I even remember what on the two-page spread it was that interested me when I go back over those pictures.