Notes on Le Monde D'Hier Book by Stefan Zweig
Le Monde D’Hier is an excellent read by Stefan Zweig. I highly recommend it. It will provide you with a good feel for the first half of the 20th century.
Book
Notes on Napoleon A Life by Andrew Roberts
Excellent overview of Napoleon’s life. It’s not an academic book yet not romanticized; it hits an excellent balance between both of those.