Begin by listing your content. Create an outline and make a list of what you want your site to contain. Then create a flow chart showing how this information will be organized and laid out. For instance, under products, you may have a page for each category of product. Once your flow chart is complete, it's time to work on the navigation.
Navigation consists of the buttons and links that move one from page to page and back again.
Create the main primary navigation with relating sub-navigation to each page. Now you are ready to organize your content. Get your content together and organize it in folders. Divide your folders into pages, images and any other main group you may need. Within these folders may be subfolders.