In this short book, Gene Sharp compiles what is obviously a lifetime's worth of work into a workable and accessible text. It isn't, as has been touted, a guide to dismantling dictatorships; in fact, it often reads quite coldly, which is common for texts of political science. But what it does do is offer a range of tried and tested methods of straining the legitimacy of a regime; indeed, there is no reason it can't be used to dismantle democracies.
However, what I think it fails to do is elucidate the various obstacles in achieving the strategies: for example, achieving mass non-violent actions like sit-ins or walk-outs. But how does an activist in a brutal totalitarian state - say that of Nazi Germany - stimulate mass resistance? Nevertheless I still rate it 5-stars because I don't think Gene Sharp set out to answer that difficult question, which is the subject of many long and dusty books.
For anyone wishing to have an insight into the methods used by the recent revolts, or revolts throughout history; any student of politics; activist; or an official of a corrupt government wanting to know what challenges lie ahead of him, then this book is a brief but quite full option.