Is this a common or proper nouns She learns dance steps from them?

This sentence doesn't give us enough information to determine if "them" is a common or proper noun. Here's why:

* "Them" is a pronoun: It's a word that replaces a noun.

* We need the noun "them" refers to: To know if it's common or proper, we need to know what "them" stands for.

Examples:

* Common Noun: "She learns dance steps from her teachers." ("Teachers" is a common noun because it refers to a general group of people.)

* Proper Noun: "She learns dance steps from the Rockettes." ("Rockettes" is a proper noun because it's the specific name of a dance troupe.)

To know if "them" is common or proper, you need more context.