Excel Comparision check on two workbooks - VBA

Hi guys, I have no experience of VBA but plan to learn soon . I have two identical workbooks ( each with 4 sheets and identical column names in each) which I receive each month with updates. I need a script which will create a new worksheet/book with these differences between each of books. Please see attached the 2 workbooks (April and June). I use both Excel 2003 and 2010.

Many thanks for your help on this!