Hi Michael,
Welcome to TechSoup.
It's good that you're interested in SEO, and like the others have mentioned, I think you should take some time to learn about it at your own pace. Good SEO is about making your site very friendly to the search engines and to the visitors that come to check out what your KPN site is all about. My recommendation at this point is that you not rush into SEO but that you take it one step at a time. A good book on the topic will get you going well on your way.
I took a quick look at your site. When you start learning about SEO you'll quickly discover that content is king on the Web. This means that your focus should be on providing visitors with quality and informative content about your cause. Quality content can take many different forms, such as information on what KPN is all about, articles, your current events, press releases, different ways people can help you... that sort of thing. Building relevant content is important. What's Kid Protection Network all about? How can people relate to your cause? How can they help? Give them stories. Give them facts. Give them useful information that satiates their curiosity. Connect with your visitors on an emotional level. These are all examples of content creation ideas you'll want to explore further. Once you've developed some good information and put it on your site that's when you'll start to see your outreach efforts starting to pay off.
To start off your SEO efforts, I'd encourage you to think about your site in terms of central themes or topics that relate to your organization in some important way. For example, a theme for TechSoup.org could be "technology resources for the nonprofit community". Another theme, this time for TechSoup Stock might be "discount nonprofit technology products". In SEO speak, we refer to these central themes as your "keyword phrases". These keyword phrases are generally composed of 2 to 4 words. As a starting point, you'll want to take some time to think about your own important themes and keyword phrases for your site. From there you'll have a framework upon which you can develop quality content that relates to each topic. I think you get the idea.
I encourage you to visit our Web Building forum if you need some SEO or other website advice along the way.
Hope this helps!
Yann