do you capitalize after a comma

It depends on the specific word or phrase that follows the comma. In general, if the word or phrase is a proper noun (such as a name or place) or the first word in a complete sentence, then it should be capitalized. However, if it is a common noun or adjective, then it should not be capitalized.

For example:

• My favorite author, J.K. Rowling, is known for her Harry Potter series. (capitalize "J.K. Rowling" because it's a proper noun)

• She visited New York City, Paris, and London on her trip. (capitalize "New York City" because it's a proper noun)

• I need to buy some fruits, vegetables, and bread at the store. (do not capitalize "fruits," "vegetables," or "bread" because they are common nouns)