In this chapter, you will encounter some ideas about structuring the e-Learning environment so that your clients/users are able to easily access and use the learning content. The environment is where you reflect the structure of your domain by sequencing topics, showing concept relationships, and supporting reader interaction with the information. The way you organize the environment to support learning and information retrieval is known as information architecture. On the Web, the site architecture is revealed in the visual design, elements with which users interact. Visual design and the interactions it reflects are called the interface.