Learning about rootkits

Rootkits are fascinating to me. When classes are over, I’m hoping I can find some time to read more about them. I have yet to find a computer with a rootkit on it until recently. My brother had a rootkit that would intercept web requests from any browser and redirect them to ad pages. It was done in a random manner so you didn’t recognize it at first; you think you clicked on the wrong link. Pretty sneaky! This book appears to be the best book out there to learn about rootkits on Windows (the more popular target)