Toad in the Jolly Roger Bay Room (SM64)

The Toad in the room sharing Jolly Roger Bay and The Secret Aquarium informs Mario of ways to get Power Stars.

"The names of the Stars are also hints for finding them. They are displayed at the beginning of each course. You can collect the stars in any order. You won’t find some Stars, enemies or items unless you select a specific Star. After you collect some Stars, you can try another course. We’re all waiting for your help!"