Click on "Tools" at the top of your webpage. Then click "Internet options" It will bring up another box. On the front page of this box you should see Homepage In this box it will have the link to your current homepage. Replace it with www.facebook.com Make sure to hit save when you are done.
You should first click on "Tools" at the top of your webpage and then click "Internet options". When you do this, it will bring up another box where you will see "Homepage" at the front. You will then see a link to the current homepage where you will now change it to www.facebook.com and finally click done.