This document provides guidance on e-commerce best practices. It begins with an introduction to payment gateways and various online payment methods like internet banking. It then discusses security issues like denial of service attacks, phishing and social engineering. The document provides recommendations on simplifying the checkout process, emphasizing security, listing policies clearly and following up with customers without spamming. The goal is to help users get introduced to the world of e-commerce and understand related concepts, risks and strategies.