"Used to" is used to talk about past habits or states that no longer exist. It is followed by a base verb without any additional endings. For example: "I used to play tennis when I was younger."
"On the other hand, "Be used to" is used to talk about being accustomed to something. It is followed by a form of "be" (am, is, are) and the -ing form of a verb or a noun phrase. For example: "She is used to waking up early."
