No, you don't. You only put quotes around what someone is sayng. For example or what someone is saying: "I can go to the grocery store,"
Titles of novels, plays, newspapers, albums, etc get underlined. Short stories, poems, song titles, articles, etc. go in quotes.
Quotes....
If you are writing an obituary, then yes. In books, you will see them as a normal name: capitalized
possibly
No
No.
If you use key words such as: quotes. summer quotes, and best summer quotes you should be able to narrow down what you are looking for. Make sure you put quotation marks around each key word.
no i think you underline it
No, quotes are for quoted material only.
In a story, it is not necessary to put quotes around a road sign. Simply italicizing the text of the road sign is sufficient to indicate that it is separate from the rest of the narrative.
If you put quotes around it or include it in a bibliography, then it is not plagiarism.
The specific usage will depend on the specific style manual being followed. It is used for tv shows in some of them, others use italics or underlines.