A web site is a presentation, communication, learning, and marketing tool. A browser helps users browse websites by providing a medium for URLs and communication paths between internet users. When designing a website, it is important to consider the purpose, target audience, ways to bring users back, and where users will access the site. Effective website design follows rules like prioritizing users over designers, making visual content relate to site function, and respecting web conventions. The document provides guidance on using tools like Dreamweaver to design pages, with reminders about using tables for layout, file naming conventions, and examples of static and dynamic page types.