This document discusses setting up and measuring the effectiveness of Facebook advertising for ecommerce businesses. It recommends grabbing your Facebook pixel for conversion tracking and custom audience tracking. It also suggests using custom audiences like newsletter subscribers and lookalike audiences of 1% of customers to reach similar potential customers. The document discusses measuring effectiveness using multi-channel attribution modeling and key performance indicators like cost per engagement, click-through rate, number of likes, reach, and time spent on page. In the beginning, it's important to test different posting times, target audiences, costs, and engagement metrics.