Writing mongo queries for the first time can be quite intimidating - luckily however, the analytics console provides the query playground, for users to build out and test their own custom queries. , before you begin creating them on your dashboard.
The query playground will let you choose from your project queries to run over the collector you'll select just afterwards. Users will then be prompted to fill in the values required by the query, before being able to execute it. This emulates how a query would be set up within the dashboard, and is extremely helpful for testing and prototyping purposes.
The output is essentially your raw formatted in JSON data, which is what is will be absorbed by the API powering the visuals behind your analytics graphs.
...