The (new) turing omnibus

The topics about which I already have a reasonable understanding were decent refreshers. However, the topics that were new or mostly new were covered far too quickly with explanations often stating that something clearly follows when it certainly didn't. Whilst the book covers a wide range of topics, I think finding them on Wikipedia would provide a better introduction since they have the space to go into more detail and provide better examples. The book attempted to give a more in-depth explanation than the space could allow and a shallower, more clearly explained introduction to the topics would've worked better to inspire the reader. They could then seek further explanation elsewhere. The book could also do with being updated as whilst the theoretical chapters haven't dated, the others sorely have.

(Most chapters read, but some skimmed. I've therefore marked this as abandoned.)

It's a nice review for the things you already know. For the rest, it does not do a great job in explaining them!