This isn't an introduction to Liechtenstein but rather an in-depth look at the country as of 2003. And as someone who's read a lot about Liechtenstein, I would highly recommend this for its attention to detail.
Beattie covers the history, politics, economy, modern state and the future of Liechtenstein. Some parts of course will be drier to some depending on where your interests lie, but it's still an excellent overview of the country.
Definitely not a quick read but a good read.