1. Use quotation marks to enclose a direct quotation--a person's exact words. A direct quote begins with a capital letter.
"I was only foolin, George. I don't want no ketchup."
2. A direct quotation is set off from the rest of the sentence by a comma if the speaker is announcing it (incomplete sentence).
“Yeah, they get mean. They get so they don’t wanna talk to nobody,” Slim said.
3. If a quotation appears at the beginning of a sentence, a comma follows it before quotation marks.
"Ain't a thing in my pocket," Lennie said cleverly.
4. If a quotation falls at the end of a sentence, a comma comes before it, before quotation marks.
Lennie droned to himself softly, "I ain't gonna say a thing. I ain't gonna say a thing."
5. If a quoted sentence is interrupted, a comma follows the first part and comes before the second part.
“Lennie,” George began, “is a big fella but he don’t mean no harm.”
6. If a sentence introduces the speaker and is complete, use a period.
Lennie giggled happily. "I didn't forget that, you bet."
George held out his hand. "Come on, give it to me."
7. A period or a comma is always placed inside the closing quotation marks.
“I was only foolin, George. I don't want no ketchup."
"Ain't a thing in my pocket," Lennie said cleverly.
8. A question mark, ellipses (…), or an exclamation point is placed inside the closing quotation marks when the quotation itself is a question or exclamation. Otherwise, the question mark or exclamation point is placed outside.
"What'd you take outta that pocket?"
9. When you write dialogue, begin a new paragraph each time you change speakers. Indent.
"Sure I can, George. Hide in the brush till you come."
"But you aint' gonna get in no trouble, because if you do, I won't let you tend no rabbits."
10. Use single quotation marks to enclose a quotation within a quotation.
“Says here ‘positively eliminates scourges.’ What kinda bedding you giving us anyway?”