Once you have copied the embed code, in Book Creator, you'll navigate to the page where you want to add this content.

1. Click the + button in the toolbar

2. Click the Media button

3. Click on the Embed option in the menu

4. Paste your embed code (usually an <iframe>) into the space provided, then click Confirm web link.

5. Wait for the link to be validated, then add a title for the embed link and click the Add button.

The process is very similar but you'll find the Web Embed option by tapping the + button, then the More tab and then the Web Embed.

Now you have the link on your page, you can resize it and move it as you wish. When it's selected, you can also click the Inspector and change a few more things:

At this point, you can click on the text or the thumbnail (in read mode or edit mode) and the content will pop out from the page. In most cases you can then switch to full screen or open the link in a new tab.

You'll be able to interact with the content in the same way you normally would.

Click the X button to go back to your book.