bit of a let down with the book

Today Amazon managed to deliver the Design Installation and Maintenance of Fire alarm systems that I thought was going to tell me everything I wanted to know about Fire Alarms that my Mother wouldn't tell me. Unfortunately I was wrong. It just goes into the BS 5839 ad nauseam which I am sure is very useful for established fire alarm engineers of which I am not, but just learning, so it looks as though I will have to put my hand into my pocket yet again and fork out for another book. Oh well,