This document provides an overview of Muhammad Arsalan Khan's summer internship at Pakistan State Oil (PSO). It includes an acknowledgement, executive summary, and description of PSO's organizational structure and history. PSO was formed through the merger of two oil companies in 1976 and today has over 3,500 retail outlets across Pakistan. The internship allowed Muhammad to study PSO's organizational structure, customer service, accounts management, and HR department over six weeks. While a short time period, it provided valuable practical experience.