Data capture programme

I need a data capture programme (pre existing programme is fine aswel as written).
The programme will need to:
• Capture stock quantities (through page source)
• capture product name of corresponding stock
• Send to excel
• Catergorise the products from which ever sub tab they were taken.
• Calculate the difference stock from previous day
• Sort most popular products on separate spread

No previous experience will result in no job given
So please don't waste your time

This will be for 10+ websites (more will be added)

7 days maximum will be given on this job