I want to transfer my books into new account

I bought nook and wanted to download my books. When I want to enter Adobe Digital Editons. It said me you cannot enter this account ext.  And I created another account with my second e-mail address. But when I wanted to transfer my ebook it said me this book authorized other account. And fort his reason I couldn’t transfer my books into my e-book reader. I just want to transfer these books into my new account. My first account mail is:muhsingullu@gmail.com the books are Demir Okce(Iron Heel) and Düşüş(La Chute). These books bought from Idefix.com. I want to transfer these books into muhsingullu@hotmail.com