I'll write an Irrlicht book. Let's say we start off with "2D Game Development With Irrlicht" then have another "3D Game Development With Irrlicht"? Split the profit 50% for me, 50% to the developer, of course :P
I'm writing books of Blitz3D in a present moment, and in Future I'll write a Book of C++ And Irrlicht. But this book will be write in Portuguese, because I'm Brasilian