Every collection has a title. When you first create your collection, you'll have to add a title before you can save it. To change this once it's saved:
- Open up your collection by clicking on it (all of your collections can be seen on the homepage).
- Click the green 'Edit Collection' button in the bottom-right.
- Your collection is now in Edit Mode. Click on the title of your collection, delete the text and enter your new title.
- Click 'Save' on the upper right.