As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.
What URL did you go to exactly? If you're on the local machine, http://localhost:8080/alfresco/ should give you the Alfresco Explorer UI and http://localhost:8080/share/ should give you the Share UI.