This article gives basic insight as to what the Holocaust was, and what really was trying to be accomplished by the Nazi party. The Nazi's believed that they were a superior race of individuals. They labeled Jewish people as "inferiors" and a threat, along with a few other races of people. The article also mentions the Nazi's solution to this "inferiority", which essentially was to systematically kill them in concentration camps. There is no exact number to how many total casualties there were during the Holocaust, but the chart below gives a good rough estimates to how many of what people died:
There were over 11 million casualties estimated.
A basic history of the Holocaust with ordered events beginning in January of 1933 and ending in April of 1961 with the arrest and prosecution of a well know Nazi leader.
After the World War two had ended, many of the prisoners were left without a home or family to go to. They did not want to stay in Germany, and the Polish were not very welcoming. Other European countries had immigration quotas that were quickly met. Many of the Jewish survivors immigrated to Israel after its establishment in 1948. Other survivors immigrated to the United States once the Displaced Persons Act was passed in 1948.
What About Survivors Offspring?
The traumatic events of the Holocaust lingered far after the end of World War 2. The scholarly article in the link above give insight as to what the offspring of Holocaust survivors experienced. After many studies were executed, and data was collected, it was concluded that the clinical portion of the offspring had a tendency of suffering from PTSD(Post Traumatic Stress Disorder).
Interview With Art Spiegelman about Maus: A Survivor's Tale
Maus: A Survivor's Tale is a series of two graphic novels illustrated by Art Spiegelman. The novels tell the story of Arts father, who was a Holocaust survivor. The story cuts in-and-out of the Holocaust story, and Art's life while trying to gather information from his unhealthy, elderly father, about the traumatic events that he experienced. Art himself did not live to see the Holocaust, however both of his parents were survivors. Art was at one point mentally hospitalized, and had trouble coping with the attention that was brought upon him after gaining attention from the first Maus novel, Maus 1: A Survivor's Tale: My Father Bleeds History.