To create a collection:
Navigate to the Collections tab on the home screen by tapping Collections
Tap the '+' button to create a new Collection and name it
Adding Songs to your Collection
You can add songs to your Collection while in the Collections tab of the home screen or after going into the Collection you want to add songs to.
While on the Collections Tab of the home screen:
Tap the ⋯ to the right of the Collection you want to add songs to
Tap the + to add songs to the Collection
Tap the ◎ to the right of the song you want to add. You may add any number of songs at the same time
Tap 'Select' to confirm
While in the Collection, you can tap the ⋯ at the top right and then follow the above process as well.