You should read the first 200 pages of Mein Kampf, which is the autobiographical part (after that comes the ideology, which is just terrible).

It's probably not allowed to say, but the first part is an excellent read and very insightful into the character, the background and the motives of Hitler and also the broader political scenery. You kind of understand him with the book and I don't think that he lied too much in it. He is quite frank. And don't worry, you won't become a Nazi when reading it. Your perspective on the sequence will simply shift a little bit. To be precise: You will realize that national socialism was a direct response to communism. Without communists on the streets there would have been no Hitler. Full stop.

Normal people back then hated the communists because they were thugs beating up others and trying to take over the country. Hitlers SA were the only ones who beat back and therefore gained ground. The sympathies towards him and his ideology was limited but they were seen as the only way to stop the communists.

Later then a lot of the communists switched sides because they were only in for the violence and the SA was more successful and therefore fun for them. The SA got dubbed as the "beef steaks" - the outside was brown, but the inside red - because there were so many former communists in their ranks.

That's how it went down. But lefties (classic ones..) who dominate academia (at least in Germany) call that "revanchist" because it really doesn't fit their dialectic narrative. And so history is on the way to start rhyming again.