If you have text in another format or application here are some suggestions for bringing the text into Book Creator.
Transfer your text to your iPad
First you'll need to get the text onto your iPad. For example, this could be through pasting it into an email or syncing a file over Dropbox.
Copy and paste your text into Book Creator
To copy text, use the standard iPad manoeuvre of a long press on the text. You'll see a little sub-menu appear and you can choose to copy the text.
If you're using the latest version of Book Creator, you can paste directly onto the book's page. If you're using Book Creator on iOS 7 or below, you'll need to open the 'Add Text' editor and paste the text into there.
To paste, just long tap again and you'll see the sub-menu appear with Paste as the only option.
Note: if you're copying text from another application, Book Creator will not preserve the formatting. But if you copy and paste from one book in Book Creator to another book, the text formatting will copy too.
Some considerations for large amounts of text
Book Creator makes ‘fixed layout’ e-books which means text and images are positioned exactly on each page.
This is great when you're starting from scratch and want to control the layout of your book. Unfortunately it does mean that each page is independent of the next so text doesn't flow across multiple pages.
With Book Creator you'll need to paste sections of text into each page or spread. To create e-books with large amounts of flowing text applications like iBooks Author (on the Mac) are better suited.
From the blog: