2.4 Capitalization
Text messages, casual e-mails, and instant messages often ignore the rules of capitalization. In fact, it can seem unnecessary to capitalize in these contexts. In other, more formal forms of communication, however, knowing the basic rules of capitalization and using capitalization correctly gives the reader the impression that you choose your words carefully and care about the ideas you are conveying.
Capitalize the First Word of a Sentence
Incorrect: the museum has a new butterfly exhibit.
Correct: The museum has a new butterfly exhibit.
Incorrect: cooking can be therapeutic.
Correct: Cooking can be therapeutic.