After logging in go to the left hand column and click Pages, then click Edit to view a full list of the static pages that are on the site. You can edit these pages in the same way that you would a News Article.
If you could avoid editing the following pages as they contain code essential to the site: News / Calendar / Gallery / Contact / Directions. Any other page can be edited. Also, if you could avoid adding any new pages as this will affect the size of the left hand column on the site.