RoboGrok University-Level Robotics Course and Parts Kit

Link: RoboGrok University-Level Robotics Course and Parts Kit: "RoboGrok is a complete hands-on university-level robotics course covering forward and inverse kinematics (Denavit-Hartenberg), sensors, computer vision (machine vision), Artificial Intelligence, and motion control."

Linked is a comprehensive course in robotics. All free. Pretty well known and respected. Worth a look!