How to add and edit static pages in WordPress
In WordPress in addition to posts/articles you can also add static pages (e.g. an About Us page). The admin panel of your WordPress has a section from which you can manage the pages. To access it just click on the Pages menu on the left side of the admin panel.
On the page that opens there's a table with the existing pages (there should be a sample page that comes prepackaged with WordPress). The table has a few columns showing information about the pages: Title, Author, Comments, Date. You have control over the columns included in the table. To hide some of these columns, click on the Screen Options button in the upper right corner and unmark the checkbox corresponding to the particular column. You can't hide only the column for the title. Above and below the table there's a drop-down menu Bulk Actions that you can use to move to the trash or edit more than one page simultaneously. To do this mark the checkbox in front of the name of each page, select the action from the drop-down menu and click on the Apply button next to it. In this way you can edit some of the page settings. To be able to edit all of them you have to edit each page separately. To do this hover the mouse pointer over the row in the table corresponding to the page and click on the Edit button that appears.
When you hover the mouse pointer over a row in the table a few more buttons will be displayed. Using the respective button you can send the page to the trash, view it on the frontend or edit some of its settings without going to the edit form (this is done with the Quick Edit button).
As we mentioned, to open the edit form for an existing page you have to click on the Edit button under its title. You can also click directly on the title. To add a new page click on one of the two Add New buttons. There's one in the menu on the left and another one in the upper left corner of the page. On the add form simply type the title and the content in the respective text areas and click on the Publish button. For more information on the other settings on the add/edit form check out the tutorial on managing the blocks and settings on the form for adding/editing pages in WordPress.
For screenshots and more details you can also read the tutorial on managing pages in WordPress.