I've come to realize that this book isn't great for step-by-step learning. Either that, or I suck at learning the way the book presents the material. I feel like there is a lot of missing code and explanations and I spend most of my time trying to figure out wtf just happened.

After I finished chapter 3 and moved along to chapter 4, I started to realize that the book feels more like a big reference manual than a tutorial. There is nothing wrong with that and I found a decent set of tutorials I can follow along online while I also have the book on standby to explain any of the gory details. Check out what I'm using http://ogldev.atspace.co.uk/index.html