When listing out all the different objectives you want your landing pages to achieve, number one is a need to understand the different users coming to your site, understand their need for information as they move through the buying process and then provide that content on your pages.
In the booklet, "Effective Online Marketing In A Nutshell", on pages 13-14, We provide the information that allows you to evaluate whether your landing pages are working or broken, and what actions you can take to fix them.
We also told you to come to this page for additional information that would help you put together your landing pages, and get your landing pages rocking! We will be updating the content here frequently, as this is a big area of learning and implementation that can make a HUGE difference in your internet marketing strategies.