This book contains the practical labs corresponding to the "Embedded Linux System Training Handouts" book from Bootlin. Get your hands on an embedded board based on an ARM processor (the Atmel/Microchip SAMA5D3 Xplained board), and apply what you learned make you own cross-compiling toolchain, compile and install your bootloader and Linux kernel, make a custom root filesystem, manage your storage in an efficient and reliable way, cross-compile extra open-source component together with your own applications, implement real-time requirements so that you can quickly turn your ideas into a working prototype!