Find the last used cell, before a blank in a Column:
Sub LastCellBeforeBlankInColumn()
Range("A1").End(xldown).Select
End Sub
Find the very last used cell in a Column:
Sub LastCellInColumn()
Range("A65536").End(xlup).Select
End Sub
Find the last cell, before a blank in a Row:
Sub LastCellBeforeBlankInRow()
Range("A1").End(xlToRight).Select
End Sub
Find the very last used cell in a Row:
Sub LastCellInRow()
Range("IV1").End(xlToLeft).Select
End Sub
Find the very last used cell on a Worksheet:
Sub Demo()
Cells.Find(What:="*", After:=[A1], SearchDirection:=xlPrevious).Select
End Sub