Follow along with the lab assignments

[ABD-01]

Hello,
I was recently learning ROS2 (coming from the basics of ROS), and I stumbled upon this beautiful assignment repository.

I am not a student at MIT nor am I enrolled in 6.141. However, I would like to follow along with these assignments to learn ROS2 and ultimately robotics systems.
I noticed that everything here is being revolved around the racecar. I may not be able to have access to the hardware, but will try the best to work up to the simulation part at the very least.

I may need a bird's eye view of what exactly these labs are, and how they connect.
Let me know your thoughts.