1. Head over to “Internet Accounts” in System Preferences. You can do this by going to the Apple menu and then System Preferences, or simply by searching for “Internet Accounts” in Spotlight.
  2. Click on LinkedIn in the right column, enter your user name and password, and then click “Next.”
  3. Read over the message that lets you know what signing into your LinkedIn account on your Mac will do (add your connections to Contacts, let you share links from Safari, etc), then click on “Sign In.” That’s it, you’re done. Now when you open the Notification Center, you should see the LinkedIn icon at the top, right after Facebook. Image Credit: Coletivo Mambembe