A website consists of several key parts including a home page to welcome visitors, sliders to showcase visual content, a header with the logo and navigation menu, additional navigation menus as needed, a sidebar with supplementary information, calls to action to encourage certain behaviors, and a footer with contact details. The home page introduces the site, sliders display images and updates, and the header, navigation menus, sidebar, calls to action, and footer provide essential site information and links to other pages.