Kaiwan N Billimoria taught himself BASIC programming on his dad's IBM PC back in 1983. He was programming in C and Assembly on DOS until he discovered the joys of Unix, and by around 1997, Linux! Kaiwan is the author of four books on Linux (all published by Packt Publishing, England): Linux Kernel Debugging, Aug 2022, Linux Kernel Programming, Mar 2021, Linux Kernel Programming, Part 2 (Char Drivers), Mar 2021 and Hands-On System Programming with Linux, Oct 2018. Kaiwan has worked on many aspects of the Linux system programming stack, including Bash scripting, system programming in C, kernel internals, device drivers, and embedded Linux work. He has actively worked on several commercial/FOSS projects. His contributions include drivers to the mainline Linux OS and many smaller projects hosted on GitHub. His Linux passion feeds well into his passion for teaching these topics to engineers, which he has done for close to three decades now. It doesn't hurt that he is a recreational ultrarunner too. He is currently working on the 2nd edition of Linux Kernel Programming.