29 Pages.

2):The unnamed narrator is mailing a package. He has a horrible headache. The day before, he got the very same package in the mail, and now he's mailing it to the next person "on Hannah Baker's list". The closer the narrator gets to school, the worse his head hurts. He feels horrible and just wants to pass out somewhere. If he goes to school, he'll have to see Mr. Porter, the last person who will get Hannah Baker's package. And if he goes into Mr. Porter's classroom, he'll have to see Hannah Baker's empty desk. So far, so mysterious.

3): (Clay Jensen) - Narrator, was a good friend of Hannah bakers, most of the story takes place in his POV.

(Hannah Baker)- Leaves cassette tapes after her suicide, is talked about by Clay very often.

(Justin Foley)- Hannah's first boyfriend, a big reason she is led to take her own life. 

(Mr. Porter)- Teacher, often talks to clay about the incident, was Hannah's teacher in the past.

4): This community could be just about any small city in the US. But as it turns out, author Jay Asher says that the story is based on the (real) 

California city where he grew up: San Luis. Places like the Crestmont Theater and Monet's Café are based on the real thing.