Make sure you cover the main points.
1. His Childhood (love of sister, distanced from a brutal father)
2. Failed Artist (rejected by Vienna Academy of Fine Arts)
3. Family had some military tradition, and he joined, fought heroically in WWI which solidified his nationalism.
4. The shame of the country post WWI because of the crippling reparations to France.
5. His rise to power during the Weimar republic (the beginning of the third Reich).
7. He studied Anti-semitism from a young age, and obviously never left him.
8. His wish for a new Aryan-Dravidian era of dominance influenced him in a big way. He used/twisted philosophy/ancient Lore to justify the expansion of the Reich (Lebensraum).
To be honest it is hard to recommend anything. There is just so much written about him.
For an analysis of his personality you might try [ame="http://www.amazon.co.uk/Roots-Nazi-Psychology-Hitlers-Barbarism/dp/0813190460"]this[/ame]
I must confess I haven't read it, but might be right up your alley.
[EDIT: woo hoo 300 posts. I've got a gold star. I'm Speshul!)