Quotations (") are quote indicators. They always goes in pair: one for opening, and one for closing.
Its primary purpose is to indicate a phrase or a sentence is a dialog or a quote. Here are some examples:
"I like strawberry jam," said Merry.
Jim said, "It's time to go home."
Another usage is to emphasize the title of an item from a collection of things. Here are some examples:
"Act I - The Beginning" from Return of the Warrior.
"My Moon Light Daisy", Lucy Footsteps.
"Soar High" - The Rocker
"Episode 2, Season 3 - That Moron" - Late Night with Jennifer Kins