I would like to second this request. I know that I can create a link in google drive or dropbox, but it would be much easier to just drag and drop pictures/files in a particular lesson. I just purchased olly on the app store and am very pleased with it, but this feature would make it AMAZING. The main reason for this request, for me, is that I live in a place that has limited internet that is pretty expensive. The more I can do offline, the better. To open a linked file, I have to use my internet, which kind of goes against why I bought OLLY. Thanks for your hard work!