iBooks app on the Mac

macOS and Mac Apps

Hello all,
I downloaded a free book from Apple on programming with Swift. I am interested in trying to learn it. My background is in C# and ASP.net on the Windows side of the pond. However I am having issues trying to read the book with iBooks. When I interact with the text of the book, I am unable to move using the arrow keys. How does one use iBooks to read books? I need to be able to read by character and word so I can examine the code found in the book. Thanks for any help on this.

Greg Wocher