In Chapter 20 you learned the steps you should follow when burning a DVD ”Previewing the Contents, Preparing your computer, and burning the DVD. iDVD makes it simple to burn a DVD and it is often tempting to just click the Burn button as soon you've finished your creation. Unfortunately, this can sometimes lead to DVDs that don't burn properly, or aren't exactly what you expected. Following the steps presented here will make sure that your project turns out as close to perfect as possible on the first try. You also learned how to add additional, non-video files to you DVD using the DVD-ROM Content feature.