Night This is a great site for information on how to teach "Night" by Elie Wiesel. This website has information about the book, the author, and even a teacher's guide with comprehension questions a teacher could use in teaching the book.
Education World: Teaching the Holocaust This site has primary and secondary source documents, including biographies of children who survived the Holocaust, photographs, charts and maps that would all be helpful to teaching students about the Holocaust. It also includes lesson plans.
Elie Wiesel Interview This has a video interview with Holocaust survivor, Elie Wiesel, in which he recounts his time at a concentration camp, gives his view on antisemitism, and tells how the Holocaust could have been avoided.