This is a great little book, which will be mostly appreciated by fans of fantasy and sci-fi speedpainting imagery.
It covers a wide variety of subject matter; mechs, warriors, maidens, and environments, all approached by an array of different artists and styles.
It won't teach you any methods of speedpainting as such - but it will give you plenty of reference and inspiration for you to use to evolve your own style of painting and sketching.
The quality is very nice, but as for the page count of just 80 pages I think £8.55 might be slightly overpriced. That said however, I have no problem giving it five stars.