Much of History is not always easily found online in video format, therefore, books are a vital source to gather more information. Here are some of my favorite books that I have read that speak about various periods of history.
Book 1: King Leopold's Ghost by Adam Hochschild
Book 2: The Nanjing Massacre by Honda Katsuichi
Book 3: Belgium In The Second World War by Jean-Michel Veranneman
Book 4: The Chaco War 1932-1935 Fighting In The Green Hell by Antonio Luis Sapienza & Jose Luis Martinez Pelaez
Book 5: Eben-Emael by Ian Kemp
Book 6: China Marine by Eugene Sledge
Book 7: The Last Stand Of Fox Company by Bob Drury & Tom Clavin