This is probably the best Lonely Planet guide, and the best Tibetan guide ever written. I normally prefer Rough Guides, and reluctantly bought this book because Rough Guide doesn't have a Tibet guide, but it turned out to be great. It's a work of love, unlike some other guides where you can detect boredom between the lines. The authors are obviously passionate about their work, and it's amazing how they don't even miss some temples so remote that the nearest town is almost a day's drive away. The only sight I read about elsewhere but not mentioned in this book is the spooky Skull Wall in the remote Biru County, but that's unlikely to be on any foreigner's itinerary. I only wish that the book would cover more of the ethnic Tibetan areas outside the TAR, mainly Qinghai and Sichuan provinces.
Unfortunately, the authors' love for everything Tibetan often leads to a strong bias against the ethnic Chinese. They apparently bought everything produced by the exile Tibetan propaganda and perpetuate long-debunked myths such as that the Chinese army killed 1.2 million Tibetans during the invasion. They tend to associate everything bad with the Chinese, like the "Chinese" habit of spitting, even though the Tibetans spit just as much as the Chinese do, and on several occasions I saw Tibetan pilgrims urinate in the middle of the busy Barkhor circuit, which I've never seen any Chinese do during my entire stay in China. They also lament that "the importance of Chinese is an unfortunate reality in Tibet", which makes me wonder if they ever lament the importance of English in India or Hong Kong. I believe Rough Guide China's Tibet chapter offers a much more balanced view of the Sino-Tibetan relationship.
These shortcomings are just minor annoyances, and I cannot emphasize enough how helpful this book was before, during, and after my recent trip to Tibet. The places I enjoyed most are the Potala, Nam-tso (wish I had stayed overnight), and Gyantse (the dzong fort and the Kumbum). One thing I regret the most is not going to the Mount Everest base camp. When planning the trip, I worried about mountain sickness and the long drives back and forth. It turned out the drive was not that long from Shigatse, the drive itself would be quite enjoyable, and I didn't suffer much from mountain sickness at all, but it was too late to change, which brings to another major caveat: ever since the 2008 riot, all foreigners are now required to submit detailed travel plans beforehand, and it was difficult and time-consuming to change once you're in Tibet. Most annoyingly, independent travel by foreigners is no longer permitted, and foreign visitors are required to be accompanied by a guide AT ALL TIMES! Although we did sneak out of the hotel in Lhasa a few times without the guide after seeing other foreigners stroll the streets unaccompanied, but it wasn't without trepidation and not relaxing at all.