You can use your theme's documentation to see what sections and settings are included in the theme, and for guidance on how to use your theme's features. You can find documentation for every theme in the Shopify Theme Store.
Free themes from Shopify
To access the documentation for a free theme from Shopify, visit Themes by Shopify, and then click the name of your theme.
You can access the documentation for a paid theme through the theme editor.