The better way to introduce is letting Greg Kroah-Hartmann, Linux kernel hacker extraordinaire, do it for me:
“It is a cd image that contains everything that a Linux device driver author would need in order to create Linux drivers, including a full copy of the O’Reilly book, ‘Linux Device Drivers, third edition’ and pre-built copies of all of the in-kernel docbook documentation for easy browsing. It even has a copy of the Linux source code that you can directly build external kernel modules against.”
This really goes a long way to lower the barrier to entry for wannabe Linux device driver writers. I used to be quite into OS stuff some years ago and for whatever reasons that’s no longer the case, but this is a really nice thing and hopefully it will further enhance Linux kernel development.