Use Posts for blogging: the most recent articles display first, and older posts rotate off the page. News, program updates, articles, and opinion pieces work well as posts.
Use Pages for infrequently changing information. The organization’s history / mission, program descriptions, directions and staff / board contact information work well as pages.
Pages can be organized to create your menu navigation structure and can be made “children” of other pages. Page order controls how pages display in a list of menu items (note: counting starts at 0, not 1. Geeky!).