One effect of the Kapp Putsch was that it made Germany’s Weimar Republic seem weak and unstable. This is because of the way that the government fled to Dresden after they realised they weren't going to get support from the army. This encouraged the uprising of smaller political parties within Germany.
One effect of the Spartacist revolution was that it's demonstrated the ship power of the unofficial Freikorps army. This is because of the way the Freikorps defeated the Spartacist revolution, and the way in which Karl Liebknecht and Rosa Luxemburg were murdered in the process.
The first reason the German people resented the Treaty of Versailles was because of the large reparations of £6600 million that had to be paid. Not only was this huge sum of money, but since other countries had very small reparations to pay, the Germans felt that they were blamed for the causing of the war, which they felt was not right. These reparations took a large toll on the German economy. This eventually led to hyperinflation and also lead to less money being able to be spent on the public, and it was very difficult for Germany to pay this off. These reparations were placed upon Germany under Article 231, known also as the War Guilt clause. The German people saw this to be unfair, as they felt that they were moreso fighting a war of self-defence, and that if anything, Austria-Hungary should be punished for the war.