Is it "Hover over the icon to learn more about A book's content" OR "Hover over the icon to learn more about THE book's content"?

I’m writing some ‘help’ content for a website, and I’ve been stumped by an article.

There are several books, so there are several icons onscreen at any one time. When you hover over a book’s icon, you get a short summary of the book.

What would be correct to say in this case?

Hover over the icon to learn more about a book’s content.

Or

Hover over the icon to learn more about the book’s content.

Or could it be something else? I’ve been told by the higher-ups to avoid a "Hover over each book’s icon" construction, unfortunately.