comma
Inc.: When used as part of a corporate name, Inc. should not be set off with commas.
Jr., Sr., III, etc.: Jr., Sr., III, etc. do not need to be set off by commas unless the sentence structure dictates that a comma be used after.
Queen Elizabeth II and the Prince of Wales were the guests of honor.
The decision will be made by Steven Morris Jr., Maya Salinger and Deanna Park.
month, date, year: When a phrase lists only a month and a year, do not separate the year with commas. When a phrase refers to the month, day and year, set off the year with commas.
January 1996 was a cold month; and January 18 was the coldest day of the month. May 5, 1999, was the day it rained; and On Tuesday, April 16, the committee elected Jane Doe.
serial comma: Do not use a comma after the final item in a series unless it is necessary for clarification.
colon
The most frequent use of a colon is at the end of a complete sentence to introduce a list or tabulation.
Capitalize the first word after a colon only if it is a proper noun or the start of a complete sentence. If the colon introduces a sentence fragment, do not capitalize the first letter.
The class was informed of all the professor's policies: Everyone, at every class session, must contribute to the general discussion.
The study covered three areas: nuclear waste, industrial waste and cancer cases.
hyphens
The easiest way to determine whether to hyphenate or where to break a word is to look it up in the dictionary. Avoid breaking words in a publication whenever possible. Instead, move the word to the next line.
Use hyphens to avoid ambiguity or to form a single idea from two or more words.
The president addressed a group of small-business owners. (By hyphenating small-business, the reader will not likely have to do a mental double take to try and figure out if the president was addressing owners of small businesses rather than a group of pint-sized business owners.)
Hyphens in compound modifiers: When a compound modifier (two or more words that express a single concept) precedes a noun, use hyphens to link all the words in the compound except the adverb very and all the adverbs that end in ly. A first-quarter touchdown, a full-time job, a very good day, her worst bad-hair day, a well-qualified candidate.
When the compound follows the noun, it is usually not necessary to hyphenate. Well-known biologist Bill Robinson ... but Bill Robinson, well known in the Upper Peninsula ...
Retain hyphenation when a compound occurs after a noun but is preceded by a form of the verb to be.
Bill Robinson is well-known ...
When a number and unit of measurement are joined adjectivally, they should be hyphenated as in 12-inch rule; nineteenth-century painter.
see also ethnic group designations
In general, punctuation goes inside the quotation marks.
"I've had it," she said. "I'm going to kill myself!"