Haiku is an open-source operating system currently in development designed from the ground up for desktop computing. Inspired by the BeOS, Haiku aims to provide users of all levels with a personal computing experience that is simple yet powerful, and free of any unnecessary complexities.

DarkWyrm's Haiku Site - Calling All Haiku Developer Wannabes
DarkWyrm's Haiku Site - Programming Lesson 2 Out
DarkWyrm's Haiku Site - Third Lesson and More
DarkWyrm's Haiku Site - Lesson 4: If, For, And, Not, Or
DarkWyrm's Haiku Site - Programming Lesson 5: Arrays, Strings, and Pointers
DarkWyrm's Haiku Site - Lesson 6: More Loops and Conditions

DarkWyrm's Haiku Site

YouTube - Using Haiku OS as a Daily Driver?! (Modern BeOS) by Dan Wood.
YouTubue - Haiku Got Awesome. Really Awesome. on 2023-06-17, by Action Retro.