(sample page used CatScrap Designs)
To access and edit the ABOUT section of your business Facebook page, you must first be an Administrator. If you are, than a dashboard will display above your Cover Photo. In that dashboard, click Manage and then Edit Page as shown below:
The next page that opens will show many options available to customize your Facebook page. Click Basic Information:
Scroll down to the About section and write a brief description. (It is important to leave room for your URL to be visible when it displays on your page.) Next, add your URL to the end of this description by copying and pasting your URL from your browser so that it will result in a "clickable" link. (example: http://www.catscrap.com). Scroll to the bottom of this page and click Save Changes. Scroll up and click View Page.
You will return to your business Facebook page. Check that your description AND website link are now visible.
I hope this tip contributes to the success of your business. If you have questions, please leave a comment.
***this option exists for many of the Business Facebook types such as Retail and Consumer Merchandise. Other business types may display differently in the About section.