Very, very good and extensive research - which is why I am giving this book 3 stars instead of the 2 it really deserves.
Originally written in French, the translation is pretty good and flows freely. The title is a misnomer as this book is not about Suleiman, his personal life or his achievements. Instead, it takes a long route through the establishment of the Ottoman Empire to its decline, goes into inordinate length into the wars fought by Suleiman and his predecessors and successors and touches upon some cultural and economic aspects of the Ottoman Empire both in Suleiman's time and in its entirety.
I am not complaining with the vast scope to which Clot chose to extend the book, but I did have some issues with the execution. The entire first half of the book is about wars that were fought by the Empire. It goes into excruciating detail about how many men did what where and how, so much so that I got stuck in the chapter describing the fights with the Holy Roman Empire for close to a year because it was so terribly boring. The entire first half of the book deals with this topic in minute detail until you are ready to beg for mercy.
The book is also pretty Eurocentric and while the politics and wars with Spain, France, Hungary, Venice and even England are discussed in unnecessary detail, the countries to the east like the wars with the Safavids are barely mentioned.
For a book on Suleiman, it barely left me with any impression of the man himself or of his contributions to his country. Suleiman's youth, his personal life, his court culture, the local politics, his legal policies and many things which would be of interest to a biographer are just skimmed over and the reader is left with only a hazy impression and does not really gain much knowledge about the man himself. I am personally very disappointed that enough time was not spent on Suleiman's contribution to creating the secular laws, which gave him the title of 'Lawgiver'. Something as huge as Suleiman scrapping the Law of Fratricide was given two sentences worth of attention at the end of the book. Very disappointing.
The second part of the book is far more interesting - from my perspective. It deals with the economics, culture and trade before, during and after Suleiman's reign. Even though, I felt I could have done with better explanations in this section. Clot mentions how the price revolution in Europe destroyed the Ottoman economy, but does not go into detail on this subject. Many such fascinating subjects are simply touched upon superficially and neglected in favour of describing pages upon pages of war strategies in a repetitive manner.
Overall, I would not recommend this as a starting point for learning about Suleiman, mostly because there is not much about him in the book. But it's not a bad book to read if you are interested in Ottoman history in general.