This document discusses Facebook Analytics tools for analyzing user behavior and conversion paths. It covers setting up Event Source Groups to track user activity across different Facebook properties. Funnels and Cohorts are explained as tools to analyze how users progress through different events or are grouped based on when they first interacted with a page. Retention reports are highlighted as useful for understanding how long users continue to engage after different activities like making a purchase. Examples provided show how insights from these tools revealed that commenters on posts had higher conversion rates and that using Messenger increased sales. The document encourages experimenting with the different analytics to understand what user behaviors are most valuable.