keeping turns with an array...

[nemaroller]

Well, you could simply use an integer which holds the value of whose turn it is:

'suppose 4 players
Dim NextPlayersTurn As Integer = 1
 
'on next turn
If Not NextPlayersTurn = 4 Then
NextPlayersTurn += 1
Else
NextPlayersTurn = 1
End If

Now I don't know what you are planning on storing in the array... but if it something like a Player class ... where each instance
describes a certain player....

You would probably want to make a collection of Players... and simply iterate through the collection on each, and reset to the first element after the last player's turn...