This document discusses different types of e-commerce models and electronic payment methods. It describes B2B, B2C, and C2C e-commerce models involving business-to-business, business-to-consumer, and consumer-to-consumer transactions respectively. Examples of websites for each model are provided. Electronic payment methods like credit cards, debit cards, emoney, smart cards, and EFT are explained briefly. Credit and debit cards are discussed in more detail including their typical physical features.