This is an excellent primer on creating digital fine art, but it has some shortcomings. On a purely personal level, I found the author's preening irritating. By the same token, he is describing, in many instances, his own artwork or his own teaching style. Minor issue and while it was irritating enough to warrant mention, it does not detract from the usefulness of the book.
What does detract is the superficiality of the instruction. Apparently Ligon intends or hopes his book will be used as school text. By my count, Ligon attempts to discuss 71 separate topics, most involving the use of Photoshop, in 247 pages, about two-thirds or so of which are primarily text. That's not a lot of space and it does not permit extensive discussion of any single topic. As a result, an 11 page section ostensibly on masking very briefly covers only a few masking techniques and tries to include five other subjects as well, including sharpening. Very large books have been devoted to the subject of sharpening. In short, Ligon is providing a whirlwind tour of Photoshop. This may work for a paint-by-numbers environment, but for the student who is engaged in solo learning, it may be troublesome.
Another critical skill given short shrift is the pen tool. Ligon devotes a bit more than two text shy pages to this topic. The pen tool is essential any serious Photoshop user and is notoriously difficult to master for many, perhaps most, Photoshop users. It is crucial to compositing and nearly all of Ligon's examples involve selection and compositing to one extent or another.
Finally, Ligon shows dozens of samples of digital art without a word of guidance as to how they were created. Readers, I think, would be better served had Ligon focused on providing more detailed "how-to" instructions.
In the end though, this is a pretty good introduction to creating digital art with Photoshop. At the moment, the subject is still a pretty narrow field and this is a solid entry. I would also suggest Susan Tuttle's "Digital Expressions: Creating Digital Art with Adobe Photoshop Elements". Same basic topic, but a very different authorial style.
Jerry