Lesson 7 explains how to set the proper exposure by using the Tonal Controls; Exposure, Recovery, Fill Light, Blacks, Brightness, and Contrast. Here he shows how to adjust from top to bottom. Here you begin with Exposure and Recovery sliders.
Your bonus video focuses on the fact that in Photoshop CS3 you can now open JPEG files in Camera and what the implications are with this ability.
Lessons 8-9 continues the use of the basic tab that began in lesson 7. Here you will work with the Fill Light and Black controls, and how you can use them to adjust the dark areas of your images. You will then will work with the last four settings; Brightness, Contrast, Vibrance, and Saturation to work with the mid-tones of your image.
Lessons 10-12 cover additional adjustments starting with adding contrast by using Curves tab, especially using the new Parametric Curves in CS3. Then you work with the Detail tab by working with Sharpening and Noise Reduction. Finally you work with HSL/Grayscale tab. This is similar to the Hue-Saturation panel in Photoshop.
Lessons 13-14 look at some of the other effects that you can also do in Camera Raw. This lesson begins with how to create a Black and White photo in Camera Raw by using the other half of the HSL/Grayscale tab. You will then learn about the new Split Toning feature in CS3 Camera Raw and how it allows you to create a split tone to your black and white photos quickly and easily.
Your bonus lesson is all about you don't have shoot in Raw + JPEG on your camera anymore.
Lesson 15 addresses the Lens Correction Tab. While this tab may not be used for much anymore, Kloskowski shows what you can use it for if you need to fix Chromatic Aberration.