to open the first workbook 
 
 
Workbooks.Open Filename:= _
        "C:\Book1.xls"
to select a column
then copy it
Columns("C:C").Select
    Selection.Copy
then open the other workbook
same as before
then select the sheet and the columns
Sheets("Sheet2").Select
    
    Columns("C:C").Select
then paste
ActiveSheet.Paste
    Application.CutCopyMode = False
then save the destination workbook
and close both files
ActiveWorkbook.Save
    ActiveWindow.Close
    ActiveWindow.Close