Essentially two parts - background/theory and examples. The "meat" of the presentation is in the examples. The vertical wind shear perspective of supercell motion is key. If you get just one thing out of the presentation, get this. B2K method comes from the paper by Bunkers, Klimowski, Zeitler, Thompson, and Weisman. This has also been called the ID method (among other things). Note the status bar at the bottom of the slides.