Seldom have I given a guide five stars, but this guide is brilliant. Without a doubt this is the definitive travel guide for Shanghai today. Lonely Planet and Bradley Mayhew did it right. The maps: excellent. Internet addresses and web sites listed, YES. Great introduction, check. The history and general information are very good. Even the box vignettes are filled with wonderful superfluous information (IE. Cheap thrills, great Jewish families, etc.). His entertainment section is one of the best I have seen. And, the accommodations, restaurants and 'what to see' are reliable, up to date and discriminating. 'Lonely Planet: Shanghai' is done right.
This also would be a great guide for long term business persons, foreign students and expats living in Shanghai. Mayhew's has unearthed information that would take you a massive amount of time and energy to retrieve on your own. His list of clubs, organizations and charities are great. .
For those who will be in Shanghai more than a few days, his section 'Excursions' takes you outside of Shanghai and these areas are well worth the effort to see. He is a co-writer for 'Lonely Planet China' (see my review) and, even though some of the information is found there too, it is only cursory compared to this guide.
Bottom line: Shanghai is a marvel, a modern urban Lazarus. A study of a city's resurrection. Never has any city come back so new, so fast. There is not a better guide out today to introduce you to this resurgence than Bradley Mayhew's, Lonely Planet Shanghai. Highly recommended