I have bought an Adobe Digital Edition copy of "The Humans Who Went Extinct: Why Neanderthals Died Out and We Survived" online. The file is a .Pdf file and I wanted to put it onto my iPad. I am determined to only use the iBooks application. I know it can't read .PDFs yet so I wanted to convert the .PDF book to an ePub book. I followed this tutorial and I was just about to convert it when after I clicked the button, a boxed popped up saying that it was DRM protected. I am not sure what to do at this point. I legally bought the book. On the Adobe Digital Editions program it says I am free to read the book on as many devices as I want. Please help me.