To learn how to begin editing pages, watch the "Edit a Page
Trouble? Can't Edit the Page?
If you go to edit a page, are logged in already, and the Edit Page option is grayed out, then the page is currently checked out to someone else.
If you do not see the Page Editing Toolbar or Banner at the top of the site, then click Site Actions > Show Page Editing Toolbar. You will then be able to see the name of the person who has the page checked out. Contact them and have them check it in so that you may continue editing. If that person is unaccessible and you need to edit the page, you may do so by clicking Page > Override Checkout and click Ok on the prompt. Note: This will discard any changes being made by the previous editor.
Editing a Page (Fullscreen)