I just wasted an hour trying to figure out how to transfer epub books that I already own to my phone without having to email them. I should be able to simply put the books into the FBReader directory on my Google Drive and have them appear in the app. NOPE I tried opening the books in the PC version in hopes that they would sync to Google Drive...NOPE. Uninstalling this app & trying something else...maybe just use Calibre to convert files to mobi & read them in my Kindle app. When I try to open a file on the PC  the search path defaults to a sub-directory of My Documents & I can't change that path even though I store this kind of content elsewhere on my computer (external drive). It's probably possible to do what I want with this app  but I have limited patience when the learning curve is this steep. It's easier to just move to another app than it is to waste my time with back-&-forth with the developers.
November 11 2015