This is one of those "Introducing..." books with the big pictures and not much text. I'm slowly working through Taylor and Wheeler's Spacetime Physics (it wouldn't be quite so slow, but I've spent the last 6 months Learning the Google), and this was a quick read in the meantime. I must have got it somewhere second-hand.
Spacetime Physics just covers special relativity. This one covers general relativity. It provides a simple introduction to the ideas, but obviously lacks depth. I end up with questions like "If gravity waves are transmitted through space which is itself distorted by the waves, does this make the propagation behave differently to propagation through flat space? Does it distort the waves?".
Coming back to this book, would I recommend it? Probably not.