These playlists on Spotify can help put you to sleep.
There is also the Sleep Radio Station, which is being broadcast from New Zealand 24/7. Linked here.
Poor sleep quality is prevalent among college students, affecting their academic performance and daytime functioning. It's important to get 6 to 8 hours of sleep each night, and practice good sleep hygiene.
Here are some tips from the Centers for Disease Control and Prevention (CDC) for getting better sleep:
This list is not complete, but a great place to start looking for relaxation before bed.