The NICHQ Collaboratory community side is structured around lists of content, which can be searched by keyword and which can be further refined by using the filters on the right sidebar, organized by type. To search by keyword, type a word or phrase into the space marked "Filter my [section of the site]" (1), and then click the button with the magnifying glass icon. Alternatively (or after having searched by keyword), you can click the checkboxes below the search field to filter the results by "Content Type", "Team" or other categorization (2). The number of results that match a particular filter is listed in parentheses (3), and if there are more than five filters in a particular category, you'll see a "Show more (+)" link at the bottom (4).
Each section of the community—the Feed, Events, PDSAs, Resources, and Members (among others, depending on your site's set up and features)—may list different options for filtering content, but the functionality is the same. And while each section may list different subsets of the site's available content, you can also search site-wide by keyword in the utility menu area at the top of the page (5). Click on the word "Search" and type in a word or phrase, and then hit "Enter" or "Return" on your keyboard (6). The results will be displayed in a similar manner as other sections of the site, with filters available in the sidebar for further refinement.