Went with my dad, we are both super into modern history. At the start we were a bit confused about the tour but the staff (mostly kind and nice) helped us and led us the right way. I recommend, do not stop at every little thing, it’s going to take aprox four hours like that. My legs were dying at the end, but that was just my fault for not speeding it up a bit.
The museum is really nice, modern, you get this obscure feeling from the building, which is supposed to be symbolic to the concentration camps I think. Overall we left, feeling really bumped out and numb, especially from the Memory Void (somehow I felt extremely anxious and disrespectful walking on the faces). If you’re going to Berlin, this is simply a must-see.