• www.kernel.org/—Linux Kernel Archives. The source of all development discussion for the Linux kernel.
• www.kerneltraffic.org/kernel-traffic/index.html—Linux Kernel Traffic. Summarized version and commentary of the Linux Kernel mailing list produced weekly.
• www.gnu.org/—Free Software Foundation. Source of manuals and software for programs used throughout the kernel compilation process. Tools such as
gcc have their official documentation here.
• https://wiki.ubuntu.com/Kernel—The starting point for anything you want to know about both Ubuntu and its use of the Linux kernel.
• https://wiki.ubuntu.com/Kernel/FAQ—The Ubuntu Kernel Team answers the most commonly asked questions about Ubuntu’s use of Linux kernels.