OK, so if you want a really brief book (less than 63 pages) that puts Adair's concepts in something you could read in about an hour or less, then this could be for you. Its about the same size and length as a One Minute Manager book. Its nicely presented and easy to read....but £9.99 rrp.....errrr, no. For those that havent read about Adair's Action Centred Leadership model, this book is a great place to start.
If you want a VERY brief introduction/overview its here, however, older Adair books like 'Effective Leadership Development' have more in and are better value. Having said that, if you can pick it up cheaply (like I did) its worth a go!