Proper JSON Syntax for extracting Data from Nested Arrays

Greetings All..

Ok I am very new to JSON but I the need to use and learn it. I have been able to search the internet to get some help in getting it setup and running on Very Simple JSON files/script. I am Visual Studio 2017 and VB.NET and I  have loaded in the NewtonSoft.Json  libraries which is working very well. However, So far I have only  been working with file/scripts that are simple and a single Array of elements/objects.

The SYNTAX for extracting Data from these elements is pretty easy and pretty straight forward and I am successful in this Simple Data...

However I now have to extraxt some data from some larger files/scripts which contains MULTIPLE Levels of Arrays. These file are 'Customer Order' files that contains an Array of ORDERS each of which can contain an Array of Items.. I need to be able to extract the SKU data from each of the ITEMS on the ORDER'

The following is my current code and below that is a sample of a Single ORDER with the 'Nested' ITEMS;

        Call xmlHttp2.open("GET", sContactURL, False)
        
        xmlHttp2.setRequestHeader("Authorization:", " Basic " + EncodedShipStationID)
        Call xmlHttp2.send()

        'Get the server's response
        sResponse = xmlHttp2.responseText
        sResponse = Trim(sResponse)

        'Save the response  for later evaluation if needed
        RtnVal = VarStringToTextFile(TempDataStorageFolder + "\ShipStationOrderResponse1.xml", sResponse)


       
        Dim json As String = sResponse.ToString
        Dim jsonObject As Newtonsoft.Json.Linq.JObject = Newtonsoft.Json.Linq.JObject.Parse(json)

        '''Dim jsonArray As Newtonsoft.Json.Linq.JArray = jsonObject("items")

        Dim jsonArray As Newtonsoft.Json.Linq.JArray = jsonObject("orders")

        Dim CurrentSKU As String
        Dim CurrentSKU Array() As String

        CurrentSKU = ""

        For Each item As Newtonsoft.Json.Linq.JObject In jsonArray


            CurrentSKU =  CurrentSKU + item.SelectToken("orderNumber").ToString + ","
            
        Next
        CurrentSKUArray = CurrentSKU .Split(",")
        '################################################################
        MsgBox("Done")
        Cursor = Cursors.Default

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So my main problem is that I just flat do not know how to reference  'item.SelectToken("Orders.Items.sku")

Any help with syntax for extracting data from the ITEM array/Nested arrays would be most helpful.
Thanks in advance
Rick

The following is a sample file:

ShipStationOrderResponse1.json