The first document of a Jew before going to a concentration camp was Anne Frank's diary, which was published postmortem by Miep Gies and Anne's father when they unexpectedly recovered it. Elie Wiesel, a Holocaust Survivor, wrote a book called "Night" describing his experiences at Auschwitz. There are many other Holocaust survivors as well, who are tell their experiences of concentration camps in museums for younger audiences.
Your question is unclear. As a many Jews were in the camps it is safe to assume that they knew of them.
No. Most Jews were unaware of the existence and purpose of the Concentration Camps and the Death Camps.
they werent, some jews were hiding
So they could capture them and send them to concentration camps
Most Germans did know, at least that the camps existed. Some kidded themselves that they were just forced labor camps. Some knew they were death camps, but as it was "just Jews", they didn't care.
Jews had some idea of what was happening. Most of their friends would just disappear and even in concentration camps they noticed people leave and never come back.
Yes; the ones living near concentration camps certainly did. The ones living farther way from them still had to know that large numbers of Jews were missing from their towns.
they pretended not to know
The Nazis didn't want to carry out the Holocaust publicly, for example in the street.
The number of daily kill count in the concentration camps varied. Toward the end of the war it was tens of thousands a month. Many documents were burned so knowing the exact total of daily murdering is impossible. Second Answer: Contact the related link below to ask the Holocaust Museum if they know the exact amount of deaths per day at the extermination camps. I did not find any record of a daily count but they would know if there is a record.
Find the nearest library. Learn who the reference librarian is. That is everything you need to know.
They were ALL located in Germany during the Holocaust besides a few in the taken-over Poland. They were all there because Germany was killing the Jews and they can't put the concentration camps on other countries' land. Besides, they didn't want anyone to know about them killing the Jews. Basically, this is a common sense answer, but still I have studied WW2 for a long time.