To access content on a page for editing, log in to access your site, and navigate to the page you wish to edit using your browser. Click the Edit Page button in the Administrator's bar at the top of the page to start editing page content.
When your edit is complete to your satisfaction, click on Update to save your changes. You can also save your page as a Draft if further review is scheduled, and then Publish the page when the edits are complete.
Note: To edit the contact information, refer to this article.