The rules governing when to use commas, and when not to, are many. Consult the textbook for details. Textbook: 16:1.G & following
Some words are commonly misused. Among them: “A part” means the thing indicated is included in the whole; “apart” means it’s separate. “Everyday” is an adjective describing something as commonplace; “every day” is an adverb showing that it happens daily. “Fewer” is used when the things described can be counted individually: “fewer coins.” “Less” is
AP does not use italics. Most titles of compositions – books, songs, movies, etc. – are enclosed in quotation marks. Textbook: 17:1.H
Stater style uses upstyle (capitalizing most words) and quotation marks around the full formal names of courses: “Introduction to the Art of Calligraphy.” Informal names or general references are lowercase: a math class. Stater style handout
In AP style, courtesy titles such as “Mr.” or “Ms.” are never used. “Dr.” is used only when someone holds a medical degree, not just a Ph.D. Textbook: 17:2.B