Race Fans - Learn Racing Physics

The objective of this site for fans and racers is to learn a little more about racing physics to enhance our 'bench racing' abilities.
I have some experience in engines but I don't know anything about car setups and aerodynamics for example. Using the basic starting equation of a race lap = Delta t = Work / Power we will plan to learn it together for various motorsports.
The plan is to range from simple tools for kids or school learning along with math and physics up to fans that want to discuss 'packages' in more detail up to racers that are looking to ~freely/low-cost approximate the type of analysis previously only possible with expensive software, simulators and high cost engineers.