Macro for changing number of rows

Try this:

Sub OrderingMacro()
    Columns("A:C").Sort Key1:=Range("C1"), Order1:=xlDescending, _
                        Key2:=Range("B1"), Order2:=xlDescending, _
                        Header:=xlYes, Orientation:=xlTopToBottom
End Sub

shg, thank you thank you thank you!!!

I'm trying to learn how to do this kind of thing on my own, but I'm obviously way inexperienced.

Do you have any tips on reading materials or courses for someone who is trying to learn how to manipulate Macros via VBA?