Beginners often stumble over Me llamo because it involves reflexive verbs in Spanish. The base verb is llamarse, meaning "to call oneself." In English, reflexives occur infrequently; you might say "I shaved myself," but you would never say "I call myself Peter" in standard conversation. In Spanish, however, personal actions affecting the subject routinely require a reflexive pronoun.
When you conjugate llamar for the first person singular (yo), it takes the ending -o, and the reflexive pronoun me moves to the front: Me llamo.
A common pitfall among native English speakers is combining two different forms into an awkward hybrid: "Me llamo es...". This translates directly to "I call myself is...", which is instantly recognizable as an error. If you choose Me llamo, drop es entirely. Say "Me llamo Carlos" or "Mi nombre es Carlos", but never blend the two.