This document provides an overview and roadmap for week 3 of the DSE 400 - Fast Track to Data Science course. It includes an agenda, discussions to participate in on the SONO platform, recommended reading and learning activities, an assignment involving applying the Apriori algorithm to a mushroom dataset in R, and information on submitting assignments. References and additional resources are also listed. The goal of week 3 is to continue exploring machine learning concepts through discussions, practice, and applying algorithms to datasets using R.