When should I use " and '?

Hello, I want to improve my punctuation skills. How do I use " and ' correctly. I know you use " when quoting someone.


Is it Please click "accept" to continue.
Please click 'accept' to continue.

Is it Why did you say the word "hello" or why did you say the word "hello"

And do I have to put quotation marks when talking about a name of something? I read a book called "Insert book title" or do I just leave the quotation marks out?