In the effort to spread knowledge about severe weather, the National Weather Service in Birmingham has put together 3 educational modules everyone should take the time to watch. It is suggested you watch them in order, as each module builds on the previous, but it's not required.
In the first section, we delve into the science of tornado and severe thunderstorm forecasting and detection. We answer the questions, "What is a Tornado?" and "What is a Supercell?" We also touch on how wind shear and instability act together to produce severe weather. Finally, we go over some basic weather definitions with which everyone should be familiar.