Books on Selim are hard to come by, so i was really excited when i saw this book.
The book is extremely well researched. Massive amounts of notes and a really extensive bibliography, not even mentioning the author actually working in the archives in Istanbul to discover correspondence that was written by the actors in the book.
However, the book isn't really what you would expect. The first part of it focuses on the rise to power of Selim. It's something that is glossed over in other works on Ottoman history. Even here, it leaves room for more, however it is a great analysis of the civil war and it's actors that happened before Selim assumed power. In other works this civil war is basically glossed over, because it was in the interest of Ottoman historians to downplay it's importance since it would hurt the image of the Sultanate.
I've got plenty of information i've never seen before. Who supported which son of Bayezid, why did Selim appeal to the army, what were the mistakes Ahmed and Korkud made in the bid for power etc...
The 2nd part of the book is a discussion on how the image of Selim we have today was made by future generations. I found that part much less interesting, but the great research is clear.
Unfortunately the book basically doesn't discuss anything that happened after Selim became sultan, which is very lacking in the English books still, despite being a very interesting topic. For some reason everyone shies away from describing it, despite Selim doubling the area of the Ottoman Empire and defeating 2 local superpowers while doing so. It is the only reason i'm giving the book a 4, cause i feel it a missed opportunity to completely ignore it.