I don't know that I would trust electronics, unless I have the finances to get a spare laptop, chargers, solar panel, Faraday cage, etc. My thoughts were to find a cheapish printer that will print copies professionally, and laminate them in binders. Make all your notes on the documents on the computer before you print, highlight them, and the finished product should have all the text and all the notes you made, for easy viewing. That's the easy part, though. Once you get more than a few binders, you need to start organizing them into your own little library, with a library sorting system that provides a synopsis of each book and its contents to help decide what book will help with X need(s). Anyway, once I'm able to spend that extra $$$, and have some storage space, that's what I plan to do. I'll be sure to provide a rundown of how I did it once it's finished, with pics.