Sysinternals is the freeware side of software company Winternals that specializes in the dark mysteries of Windows computing. This is the place I go when I want to understand how the Windows Operating system does something at its most fundamental level. The writing is clear, and they provide a lot of interesting utilities for exploring the nooks and crannies of a world that most users are barely aware of.
I recently discovered that Mark Russinovich, one of the founders of the company, has a blog. It’s awesome…something will bug him, like popups that make it through his popup blocker or a mysterious slowdown of his computer, and then he goes into sleuth mode and hunts it down. It’s incredibly cool to read how an expert gets the job done. Every hard core nerd will appreciate this blog.