A few thoughts:
You said "I\'m finding it quite hard to find info on what the propoganda actually achieved, like figures, voulenteering for the army figures went up when a certain poster was relesed etc."
You\'re talking about the EFFECT of the propaganda, which actually seems to be of secondary importance to your thesis. You said your thesis is:
"To maintain its authority, Hitler\'s government relied on propoganda rather than solid achievement"
If that\'s your thesis, then you\'re only trying to prove that the Nazi government preferred to convince the populace that things were going well for the nation, instead of taking action to ensure that things actually did go well. Thus the effect of the propaganda is not really important. What you have is actually a more interesting thesis than the ordinary approach concerning the of "efficacy of propaganda."
Do you need to limit this to the years 1933-1939? I think you\'ll find much more gregarious examples of absurd propaganda between 1939-1945. Might as well make it 1933-1945, I think.
A history monograph is basically a history book, written by a historian, which utilizes predominantly primary sources, to argue a thesis and arrive at a conclusion. Basically, the result is a secondary source because it was written by a historian. If you haven\'t taken any University level history courses yet, then you might not have read a book like this yet. Perhaps you\'re using mainly text books which give a broader overview.
Examples:
Secondary source: "Hitler: 1889-1936 Hubris" by Ian Kershaw
Primary source: "Inside the Third Reich" by Albert Speer