If you're looking for the best biography, try Mein Kampf, much more accurate than the Jewish tripe you're probably reading. Contains some very sophisticated and enthralling concepts as well.
Ahh I was going to read Mein Kampf but I heard it is not the best written book in the world.
Still, it may help me with my studies and give me more insight into the man himself!
Ian Kershaw's is about the best. Two volumes, but I think it's been reissued as one recently (possibly abridged, around 1000 pages). I'm not sure about the one you're reading at the moment, sorry.
EDIT: the one you're reading at the moment has a positive quote from Richard Overy on the cover, so I imagine it'd give a serviceable overview.
"The Last Days of Hitler" by Hugh Trevor-Roper is probably one of the best known reports of the last days of Hitler's life, so that's definitely worth reading if you are studying Hitler as part of an history course.
I don't know wether it was translated but besides Kershaw, "Hitler- a biography" by Joachim C. Fest is very famous in Germany.
"Mein Kampf" (Interestingly the uncommented version is forbidden in Germany) will tell you a lot about Hitlers character and intentions but not so much about his biography. Furthermore it is written in a excursive and difficult way probably the reason many people didn't read it.
Give Mein Kampf a read, after all, it was written by the **** himself.
Hitler's Table Talk is the most comprehensible book if you're wishing to endeavour into a piece of literature conveying Hitler's views in an unbiased fashion. Mein Kampf, as has been previously suggested on this thread, is quite frankly, abhorrent and distorted; vast quantities of it were not even written by Hitler himself.
It's enlightening to see a British youth in search of reliable, impartial information on Adolf Hitler, as both the media and education system indoctrinate the young'uns of this country at a conceivably infantile age, into being slobbering, unpatriotic, politically correct dolts who, for the most part, believe everything they are told if it's from the mouth of a higher authority.
Mein kampfy chair is the best place to look.