Reading is usually about the words on the page, but learning to program is about code. When you’re first learning to program, you should make sure to look at, and try to understand, every example. When I first learned to program, I would sometimes read the code examples before the text, and try to figure out what they did. It doesn’t always work, but it did force me to look at the example very carefully, and it often helped make the writeups clearer.
If you want to see what sample code looks like, you can read this site’s introductory programming tutorial. This tutorial spends a great deal of time talking about the sample code to help you work through exactly what the code does.