Collections are the categories for your products.
For example, you can categorize your products by gender like (Men's Collection and Women's Collection), or by season (Summer Collection and Winter Collection), or by type (Jeans Collection, T-shirt Collection, or Shoes Collection), and so on.
From the store dashboard, click on 'Add collection'.
Type the collection name, add the description, upload the image, and click 'Add Collection'.
Then click on 'Add Product' to add products to that collection.
Choose the products from the product list, and click 'Save'.
You can view, delete or edit the collection, from the collections page. You can edit the collection name or image, add or delete one or more products from the collection.