Hitler had the kind of intelligence which was closely tuned in to the german psyche. There had been heavy reparations to pay after the first world war, which was resented by german people, many of whom were badly impoverished. jews had always been resented for their clannishness, and above all for their wealth.
Hitler picked up on all these resentments, and offered the Germans a way out and a return to their former glory. His policies were irrestible to ordinary germans of those times. Try to find books on Hitler's psychology. If you still have access to a University Library, the Enquiries Librarians will certainly be able to get you started.