Your homepage (the opening page) is your gateway. You want your viewers to quickly see what you have to offer. The purpose of your site should be immediatly evident when your homepage opens. Think of your homepage as a table of contents. If you have a lot of content, it can be placed on other pages with links to them from your homepage. Try to avoid the need for scrollbars on your homepage.
Do a storyboard. Use a card or a sheet of paper for each page. Sketch in what will be placed on each page. Then prepare a draft of the text. Make a flowchart that illustrates the navigation of your site so that you can plan your links accordingly.