To access a data feed select 'Data Feeds' on the left-hand side panel.
Categories
When searching for a data feed, you can filter the options down by selecting specific categories to reduce your view of the different data feeds, depending on what you are searching for.
Create Query
Once you have filtered down the collection of data feeds, select the feed that you would like to create a query of by clicking 'Create Query' on the right-hand side.
You have now created a query of your desired data feed and can begin your analytics.