Couchbase offers N1QL, a declarative query language that extends SQL for querying JSON document databases, allowing users to sort, filter, transform, group, and combine data from multiple documents with SQL-like syntax, including the use of JOIN operations. N1QL provides flexibility by eliminating the constraints of single-table data models, enabling complex data interactions within JSON documents. Users can learn more about N1QL through resources like the N1QL Tutorial and utilize tools such as the CBQ tool or Couchbase Query Workbench, which offers a graphical user interface for query development. To further assist users, Couchbase encourages participation in forums or social media for questions and updates.