Sorry to told you this book is not good
this book will bothers your conecntration, I see if you
read the book of each author will be much better from
reading this book, I read the books of these authors in the
past years, and I read this book also, the books of know it all
in my opinion is not that so good, because it's summing
ideas from the authors books, and as you will see the topic
of each book is different from other, so be good in one thing
better than nothing!!
best regards,

Abdulla