Hi @Hal Morrissey Gilman ,
According to my research and testing, 'GET' is a HTTP method ,it means "Read data from a resource" .Here is a document about HTTP method you can refer to.
You can use the following URL to get the {site-id}:(Refer to the image below, the red part is the {site-id})
GET https://graph.microsoft.com/v1.0/sites/{hostname}:/{server-relative-path}
Then, go to List setting, and you will see the {list-id} from the browser address ,as shown in the picture below: (the red part is the {list-id}, please change “%7B” to “{” ,and change “%7D” to “}” )
Finally, use the following code to display the list:
https://graph.microsoft.com/v1.0/sites/{site-id}/lists/{list-id}/items?expand=fields(select=Name,Color,Quantity)
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