Action Details
Requirements and how-to articles for Facebook's action:

The Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising by understanding the actions people take on your website.

You need this to get it done:

Before you begin, you need a website for your business, and you must be able to edit your website's code.
Pixel Name
Enter a name for your pixel (maximum of 50 characters.)
Website URL (optional)
If you wish, you can enter your website URL to check for easy setup options.
Once you've created your pixel, you're ready to put the Facebook pixel code on your website. See official documentation for the different setup options available.
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How-To Articles
A list of useful links for you:

Facebook Business Help Centre - Create and install a Facebook pixel
A set-by-step guide to creating a pixel and installing it on your website.
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