The Blue Crane Training DVD for the Nikon D90 Digital SLR Camera is a thorough overview of the camera. On a job? Forget which button to press? Need to change a setting? It's easier than carrying the manufacturer's instruction manual. All you need is this training DVD and in about two hours, and you'll have the knowledge and the confidence to create the images you want. The topics are arranged in chapters, so you can move at your own pace and return later to learn individual subjects. The main topic covered in this DVD is functions and mechanics of the D90 DSLR.