How to add FAQ page and FAQ questions

To create Shopify's FAQ page, do as follows:

1. Create a custom meta field. Go to Admin - Settings - Custom data - Pages and press Add definition. Set the name FAQs in the Name field. Note: pay close attention to the plural form faqs (not faq). When adding the Field you should select the JSON at the very bottom of the values list. Note: don't overwrite anything in the Namespace and key field. Remember to Save. Good job - you've created the custom meta field with the definition name FAQs. 
2. Create the page. Go to Admin - Sales Channels - Online Store - Pages. Click on the Add page button in the upper right corner. You can title the page according to requirements and you will see the Metafields on the page. In our case, we named it FAQs. Remember to Save. Good job - you've created the custom FAQ page.
3. Stay in the same admin area and search for the page you've created - mention it may have another name in your store. On the new page, you can see the Metafields. Click Show All and enter the list of FAQs in format JSON.
4. The next step is to assign the FAQs page to our theme template. The picture below shows the example. Save.
5. Now go to Admin - Online Store - Customize. From the menu at the top of the theme editor, select Pages - FAQ page. In the sidebar you may see the Template section - FAQ page content. Here you can set the subtitle for FAQs. 

There is also a possibility to show FAQ questions on the product page. See details in another guide.