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Anyways.
I'm assuming this is High School level, in which case I should be able to give you the bare bones of an answer and you look from there.
Open with a bit of back ground. Talk about his political history prior to getting into power in 1933 - for eg. the Munich "Beer Hall" Putsch in 1924, add a bit of background. Not too much.
Next, I would open with the Enabling Act which many people mark as the de facto start of NSDAP totalitarian rule in Germany.
Have a pretty strong emphasis on the Nuremberg Rallies, particularly the 1935 Rally of Freedom, or Reichsparteitag der Freiheit(It's always good to throw in some German words in an essay), which coincided with the ratification of the Nuermberg Laws
On the Nuremberg Laws you can note that they were the first major set of antisemitic laws passed in Nazi Germany, and on top of that they also enacted conscription/mandatory military service, in open defiance of the Treaty of Versailles
The 1936 Nuremberg Rally of Honour is also notable as it celebrated the remilitarization of the Rhineland, again breaking the Treaty of Versailles.
Don't forget to include the Olympics somewhere
Makes notes that Hitler was the head orator in these rallies, and that his oration(Along with Albert Speer's designs and Leni Riefenstahl's movies such as Triumph of the Will) were great propaganda tools and were instrumental in indoctrinating much of the German public
1938 is a pretty big year. Two main events; Anschluss and the occupation of the Sudetenland. There's more than enough to write about here.
Then in 1939 you can talk about the occupation of the rest of Czechoslovakia, in violation of the Munich Agreement, and then you can talk about the Pact of Steel between Italy and Germany, which was a military alliance, and the Molotov-Ribbentrop Pact which was a Non-Aggression Pact between Nazi Germany and the USSR, which also included the partition of Poland between the two powers. You can talk a bit about how unexpected this was as the Nazis and Communists were ideological enemies.
Then you can go on about the start of the war, the attempt to make a deal with the British and so on so forth.
That should be enough content to fill up most High School level essays. My advise is in future if you're going to ask a question for your homework, try phrase it a little better(I was actually not going to click on your post at all because it was so blatant) and actually come here with something already done.