Always capitalize
Capitalize the first letter of every sentence, the names of people, localities, days of the week, and months. (Ex. Jim moved to Rexburg, Idaho, on July 28, 2019.)
Capitalize school classes that are complete course titles or that originate from a country. (Ex. English 106, Biology 101, Accounting 275)
Capitalize family names when they are used with a name. (Ex. Aunt Jane, Grandma Sue, Uncle Jerry)
Capitalize titles that precede a name. (Ex. Professor Gentry, Judge Jones, Doctor Peterson)
Capitalize titles when they are used in place of a name. (Ex. “Thank you, Doctor.”)
Capitalize brand names and other proper nouns. (Ex. Levi’s, Walmart, McDonalds)
Capitalize nationalities, languages, countries, and religions.
Capitalize the first word of a quotation. (Ex. John asked, “What’s your name?”).
Capitalize words referring to Deity or specific religions. (Ex. Jesus Christ, Buddha, Muslim)
Capitalize dog breeds that include a proper noun. (Ex. German shepherd)
Capitalize major words in a title. (Ex. The Perks of Being a Wallflower)
Capitalize "Earth" when it's discussed as a specific planet. When Earth is a proper noun, "the" is usually omitted. (It takes six to eight months to travel from Earth to Mars).
Do not capitalize
Seasons (Ex. My favorite season is fall.)
Diseases (with the exception to diseases named after people or acronyms) (Ex. chicken pox, flu, HIV, Alzheimer’s)
For emphasis (Ex. That was totally WICKED!)
Titles when they are used with personal pronouns (Ex. my grandma, her mom, our aunt)
School subjects that do not originate from a country or culture (Ex. history, math, earth science)