If you already have text from another source, adding it to your book is very easy.
In Book Creator add a text box by clicking the icon
or on the menu bar choose INSERT and Text Box,
Now open your existing document which has text you want to use. This can be anything from a website, blog, or document like Pages or Word.
Then you just highlight the text
And COPY it.
Keyboard shortcut on Mac is COMMAND C
on Windows its CONTROL C
or you can use the menu bar EDIT and Copy.
Then double click the text box you made in Book Creator and Paste the text into it.
Keyboard shortcut on the Mac is COMMAND V
on Windows its CONTROL V
or you can use the menu bar EDIT and Paste.
After you press ok it will contain your text.