definitely a great read. want to know how beer went from small breweries to industrial operations? you can read about it in here. want to know how the breweries came up with porter, then switched to pale ales? read this then pale ales, and you will understand a good bit of british brewing history. want to know where stouts come from? read this. definitely a good read, but in need of some updating, and could use some discussion of baltic porter and american (robust) porter. if you like the style you should read this though.