Night by Elie Wiesel is written in the first person point of view. You can tell because Elie is the narrator and uses the pronoun "I" to tell his story. Most novels are written in either first person or third person. In third person, you will not see the pronoun "I" unless it is in dialogue. Instead you will see names of people. For example, if Night were written in third person instead of first, the third paragraph on the first page would look something like this:
"Eliezar got to know him toward the end of 1941. Elie was twelve. He believed profoundly. During the day he studied the Talmud, and at night Elie ran to the synagogue to weep over the destruction of the Temple." (Wiesel 1)
When I change from first person to third person point of view, I change "I" to "Eliezar," "Elie," and "he." Though highly unusual in literature, once in awhile, you may also read something in second person. Second person is speaking directly to the reader, and the pronoun used to indicate that is "you."