Name of the wind by Patrick Rothfuss. The book is a must read if you love prose. The series isn't finished, probably won't be, though I hope it will be. You have been warned.
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Well, it's really meant for e-ink devices. Understandably the experience on Android tablets would be sub-par. I often don't even use the file browser. As my book is downloaded I begin reading, any of my previous books are neatly displayed in the "History". So the only reason to navigate the file explorer would be for a book I downloaded a while ago but never opened. I just dump all downloaded books (except manga) to one folder anyway, so I wouldn't be navigating much. If you have all your books organised neatly into different folders on Android and try to navigate to them via Koreader you'll have a hard time of it. Would be easier to use your file manger and just open with KoReader.
I would suggest Kobo. You can easily install Koreader on it. Then when you want to transfer books, start an FTP using your phone's file manager, and connect to it from your Kobo's koreader. This is how I transfer files wirelessly from my phone to my Kobo. If you're worried about the effort or skill it would take to install koreader, don't be. It's as easy as connecting to your computer and running a script.
I haven’t listened to much of Haken, where would you suggest I start?