This book gave practical advice that I could follow, but there was also some that is not feasible for someone that is already behind on everything when they lose their job.

The best time to read this book is before you lose a job (to best prepare). The second-best time is right after losing a job. Avoid making mistakes, especially at a very stressful and emotional time like losing a job.

This book is generally useful, in that it encourages people to take long-terms views, not guess the market, to save etc.
However, the detail and the various tax mechanics are all US-focused, which is of course no use to anyone outside that tax regime.

It was well-written, and having been is the US system for a number of years it makes sense (some tips about the 401(k) were great, for example), so well worth a read if you are in the US . Otherwise, not useful.