There were a lot of political parties in Germany in the early 1920's. Hitler supported the DAP, and in 1920 became that party's minister of propaganda. That same year he engineered a name change of the party to the NSDAP - National Socialist German Worker's Party or "Nazi" from the first two syllables. At the same time he adopted a swastika as the party's emblem (a good luck charm often used in the past) and incorporated the Roman Salute used by Italian Facists. Never underestimate the power of symbolism.
Hitler met, and found a mentor in, Dietrich Eckart. If you would know Hitler's thinking and his rise to power, in my opinion, you must study Deitrich Eckart, The Nordic connection and Peer Gynt, Buddist "Maya", Indo-Aryan philosophy and... ooooooEEEEEEooooo... The Thule Society. Learn about those things, and read about Dietrich Ekart, and you will come to know Adolf Hitler a lot better. I don't think Hitler was really into the occult though. I think he got the swastika from his brief time with the Thule Society.
In what might be called an almost magical transformation, Hitler became a hypnotic speaker and expert crowd manipulator. People became transfixed and ecstatic when he spoke, surrounded by symbolism. I attribute much of this to Dietrich Ekart. Hitler rose in the party. He began to meet some important people.
In 1924, Hitler and his crew tried a violent takeover of the country but failed and was sent to prison for treason. This takeover attempt (The Beerhall Pusch) is interesting and I will write about it tomorrow. While in prison he wrote the two-volume book "Mein Kampf."