I bought this guide since I will be studying in ETHz by September and wanted to get to know the town of Zurich before I actually arrive there. All I can say about the guide is that it fulfils its aim of presenting Zurich excellently. You actually feel you can walk the town by the moment you arrive, even if you've never been there before. The guide is perfectly constructed in a way so that you don't get lost in town, but step-by-step get familiar with it. The book itself is colourful, with hard & glossy quality paper, with plenty of pictures & all the necessary maps to keep in track with the various sightseeings described; and all these in a convinient pocket size.
Trust me, in the end of this guide you will feel confident enough to visit Zyrich and walk it by yourself.