Elmo and Sonia Manzano chat on “Sesame Street.”

No registration is required; you just have to show up to see the speakers, so there’s pretty much no excuse for you not to listen to some of your favorite young-adult authors come and talk about their books.

The keynote speaker is Sonia Manzano, known as Maria on “Sesame Street.” Other popular authors making an appearance include Libba Bray (“Lair of Dreams”), David Levithan (“Another Day”) and Jesse Andrews (“Me, Earl, and the Dying Girl”).

Details: 8:30 a.m. to 6:30 p.m. Saturday. Free. St. Edward’s University, 3001 S. Congress Ave. bookpeople.com/event/texas-teen-book-festival-2015.