The New Relic Query Language (NRQL) allows users to query and analyze data from their applications, providing insights into performance, usage, and other metrics. NRQL enables users to simplify data, ignore irrelevant information, transform data, facet data, combine unexpected combinations, put barriers around data, and apply advanced mathematics. With these features, users can gain a deeper understanding of their application's behavior, identify trends and patterns, and make data-driven decisions. The article provides seven tips and tricks for advanced NRQL querying, including using functions like `disguise`, `ignore`, `transform`, `facet`, `combine`, `barrier`, and `mathematics` to extract valuable insights from the data.