Nand To Tetris: Building A Modern Computer From First Principles is an accessible, structured, bottom-up course in low-level stuff. You start out by composing

Nand To Tetris: Building A Modern Computer From First Principles is an accessible, structured, bottom-up course in low-level stuff. You start out by composing simulated hardware gates to create higher-order gates, eventually creating a CPU and entire computer. Then you move into assembly, and eventually build an OS. All of the homework has automated grading, so it’s very possible to self-study. http://www.nand2tetris.org/ http://www.nand2tetris.org/