How to use a Facebook pixel?
By Christina Newberry
You can use Facebook pixel tracking to collect data on two different kinds of events: a set of nine standard events that Facebook has predefined, or custom conversions that you set up yourself. An "event" is simply a specified action that a visitor takes on your website.
Standard events
The nine standard Facebook pixel events for which you can simply copy and paste standard Facebook event code are:
View content: Someone lands on a page on your website.
Search: Someone uses the search function to look for something on your site.
Add to cart: Someone adds a product to their shopping cart on your site.
Add to wishlist: Someone adds a product to a wishlist on your site.
Initiate checkout: Someone starts the checkout process to buy something from your site.
Add payment info: Someone enters their payment information in the purchase process on your website.
Make purchase: Someone completes a purchase on your website.
Lead: Someone signs up for a trial or otherwise identifies themselves as a lead on your site.
Complete registration: Someone completes a registration form on your site, such as for a subscription product.
Source:HOOTSUITE