This is a great practical guide to the issues that you are likely to face, with all the details as to what help and services are available, who qualifies and how to get them, conveniently listed at the end of each chapter.
But much more than that, the book gives the real life, human perspective on all these issues. It doesn't give irritatingly obvious advice or patronise the reader. It makes you think for ages after you read it.
Don't just read it when you are at crisis point with your parents, read it while they are still able to run faster than your children and make them and your siblings read it too. But keep it for the crisis too!