I need help importing an e-book

I know this topic already existis, but I still not managing to do it.
Can someone help me?

Thank you. (:

Do you have the book in an EPUB or AZW format?

EPUB

Convert the book into a TXT file using Calibre. Copy & paste the entire book into the import site on LingQ. Click on save. It should now get imported, but sometimes it bugs out. If it bugs, simply repeat the process and it should work

It worked now, thanks