Looking for logging into the Ibooks site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Ibooks site. After that you can login as usual with your login credentials.
https://www.apple.com/apple-books/
https://support.apple.com/de-ch/books
https://www.apple.com/de/apple-books/
https://discussions.apple.com/thread/4684332
https://ebookfriendly.com/browse-ibooks-store-without-ipad/
https://ebookfriendly.com/things-to-know-about-ibooks-store/
https://www.macprime.ch/news/article/erste-ios-11.3-beta-ibooks-heisst-neu-nur-noch-books
https://appletoolbox.com/apple-help-tips-and-tricks-support-index/ibooks-problems-resolve-ibooks-app-issues/
https://apple.stackexchange.com/questions/298552/unable-to-login-with-apple-id-in-ibooks-author?rq=1
https://www.imore.com/how-restrict-access-itunes-app-store-and-ibooks-parental-controls-iphone-and-ipad
https://macreports.com/how-to-cancel-your-itunes-apps-itunes-store-ibooks-etc-purchases/
http://docs.jamf.com/9.93/casper-suite/administrator-guide/eBooks_Available_in_the_iBooks_Store.html
https://publishdrive.com/publish-a-book-ibooks/