Sony Reader, Schmony Reader. Who needs one of those devices when you can turn your Powerbook into an e-Book reader. Sure, even reading this text could be considered reading an e-Book, but does your laptop or desktop machine look like an actual book? No, so stfu!
https://gizmodo.com/live-from-ces-hands-on-with-the-sony-reader-146864
Simply rotate that PDF to display vertically, and flip the Powerbook up on its side. Not it really is a PowerBook. Oho! Hit the link for a completely unnecessary video. Simple and basic, but you know some people—like me—would never think of an idea like this.