It runs through everything from the four-stroke cycle to the roles of fuel, oil and air in the engine. It then delves into the different systems that keep the engine running. The information is easy to handle, clearly explained, and is not at all overwhelming. You might not be able to explain precisely how to completely disassemble an engine after this overview, but at least you'll know what a water pump does. Take a look below for the full chart, or click on it to go over to O'Neal's page for the embiggened version.
Infographic designed by Jacob O'Neal