Dive into the third lesson of the ROS 101 series, focusing on simple Turtlebot simulation in ROS. Explore mobile robot simulation, play with Turtlebot, and gain a brief introduction to robot kinematics. Build upon previous lessons covering Python3 installation, ROS workspace creation, package management, publishers/subscribers, ROSlaunch, and rqt visualization. Follow along with unedited content to experience real-time troubleshooting. Discover Turtlebot simulation techniques, understand basic robot kinematics, and reinforce your ROS knowledge through practical examples and hands-on exercises.