I don't know of a direct tutorial.
You can just add a recordset to the current orders details page to return the details for that order. Then use a repeated table on that page to show the order details information.
You could add an INNER Join to the current orders table to join in the users information that you want displayed on that page as well. I don't think you would use DA at this point... the rest can be done with native DW functionality at this point.