Professor Raffael Scheck is at Colby College, in Maine, USA. He has written a number of books on German history. Each link to his site is reasonably long (that's a GOOD thing!) and detailed. You still need to use other sources, but an excellent framework.

The Weimar Republic

The Treaty of Versailles: http://www.colby.edu/personal/r/rmscheck/GermanyD1.html
Democratic Constitution: http://www.colby.edu/personal/r/rmscheck/GermanyD2.html
The Republic Besieged 1918-23: http://www.colby.edu/personal/r/rmscheck/GermanyD3.html
Chronology 1920-1929: http://www.colby.edu/personal/r/rmscheck/GermanyD4.html
Weimar Culture: http://www.colby.edu/personal/r/rmscheck/GermanyD5.html
Rise of Nazis and Communists: http://www.colby.edu/personal/r/rmscheck/GermanyD6.html
The breakdown of the Republic: http://www.colby.edu/personal/r/rmscheck/GermanyD7.html

The Third Reich


Establishing a Dictatorship: The Stabilization of Nazi Power: http://www.colby.edu/personal/r/rmscheck/GermanyE1.html
Building up German Hegemony in Central Europe, 1933-1938: http://www.colby.edu/personal/r/rmscheck/GermanyE2.html
The Second World War: http://www.colby.edu/personal/r/rmscheck/GermanyE3.html
Eugenics and Racial Mass Murder: http://www.colby.edu/personal/r/rmscheck/GermanyE4.html
The Functioning of the Nazi Regime: State and Society: http://www.colby.edu/personal/r/rmscheck/GermanyE5.html
National Socialism in International Comparison: http://www.colby.edu/personal/r/rmscheck/GermanyE6.html