Tenor saxophone sheet music is in the key of Bb. It’s a whole step away from concert key, so if you get music that is in concert, you need to play every note up a whole step.
It’s more convenient to have music in your own key though!
Here are a few music books for tenor sax:
Henry Mancini wrote some cool music, so if you would like the Pink Panther and some of his other songs, you could get