Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disordered collection of tips

The idea if making this book is good. The result is a disordered collection of tips. The structure is disordered and disappointing. I suggest the authors would follow a different structure like that of a "security services one". This book like it is is very disappointing. You have the impression that there is no start and no end to the arguments either.