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com. Sign in with your username and password. If you don't have an account, create one now. . Click on "Jetpack," located under "Welcome" on the dashboard menu. Click "Configure." A pop-up box will appear asking you to sign into your Facebook account; it will then ask if you want to connect your site to your Facebook profile or any pages to which you may have access. Next to “Make this connection available to all users of this blog?” select which choice you prefer, and click "Okay." You have now synced a Facebook account to your blog. When you write posts, on the right side in the Publish box at the top, you will see a line that says Publicize with your Facebook handle next to it. By default it will send the title of the WordPress post to the Facebook post. You may change it or add hashtags by clicking the Edit link beneath it.

Summary:
Go to WordPress. Locate the dashboard menu on the left side of the page. Find the box that says Publicize. Click the Connect button next to Facebook. Select the appropriate page or profile.