The Classical is a variation of the Dutch defense
To start: White pushes this pawn
And Black replies by pushing this pawn
White now pushes his c-pawn
And Black develops his Knight
White starts the development
Black opens the bishop
Now white prepares the fianchetto
Black develops the bishop
White makes the fianchetto
Black makes castle to protect the king
White does the same
Black moves d6 to control the center
This is the Dutch Defense - Classical Variation