Cannot sync epub content downloaded to iBooks on Mac with iPad
I use my iPad as my ebook reader. I sometimes download epub files on my Mac and open with iBooks. Files purchased through iTunes/iBooks sync with the iPad library as they are supposed to. Sync options allow for syncing FROM the iPad to the Mac, but not vice versa. How do I get these non-purchased files into the iBooks library on the iPad?
I am running the latest OS on both the iPad 2 and the Mac.
Thanks.
iPad 2 Wi-Fi + 3G, iOS 8.1.2