Manually adding eBooks to [rooted] Nexus 7

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http://androidforums.com – I've been trying to do this for some time yet, I think the guides I've been following are for non-rooted N7's. I'm running Cyanogenmod 10. I've tried creating an "eBook" folder manually and putting all my books in there, nothing. I have 4 different apps I've been trying with, the built-in reader, Kindle app, B&N Nook, and Calibre, none of them can see the files, they're all EPUB and PDFs. I've tried placing them directly into Kindle directory, can't see them. What directory do I put them under, or can I upload them via drive or drop box so they can be found? (General)