The code works a treat once you get to grips with some of the keyboard commands.
If you want to explore fractals this is a good book to do it with. Highly recommended.
As an aside: I bought the kindle version. I saw the Panorama investigation into the appalling conditions Amazon staff are put under and I was shocked by it. At least buying the kindle version I haven't contributed to that stress since no physical item had to be picked. From now on I will keep voicing my concern at the way Amazon treat their staff through my reviews. Long live free speech!