Introducing Fractals - A Graphic Guide is quite well done. To truly understand fractals, however, takes quite a bit of mathematical background. The authors do an excellent job of trying to ease the reader into the required math, but the average reader without much higher math background likely will not really understand some of the material. I have an extensive background in math (though not exercised much in the last 20 years), and I still felt a tad frustrated that I was not sure I really "got it" for some of the concepts. Do I *really* understand what an attractor or repellor is? Or their significance? I think so - but do I?
So if you want to understand the basic ideas behind fractals, and their significance, this is a decent intro. If you are looking for a quick, easy read, that won't require much thinking to get through, this might not be it. The nature of the material might make finding such a book a tall order.