This is really an amazing feat: books on programming languages age really fast. This one - not so much. And you can really appreciate the careful thought that was put in each sentence. Peerless.
> The real challenge with C is multi-threaded programming, so don't do that if you don't need it.
Well, these days it's harder and harder to avoid it if you want to write efficient apps - we got more cores and the clocks remain more or less the same.