After entering the Dashboard and choosing Account Performance from the submenu, you will see a lot of analytical data. You can narrow data results to your brand journal or just leave default configuration (Account), so all published content will be taken into consideration, including your standalone stories. You can also set up a time frame.
One of the elements of the Account Performance view is Traffic sources, which tells you from where your Brand Journal's visitors come from. Remember that statistics of traffic sources (like Facebook, Direct, Google) & referring websites count only unique visits.