Update README.md

Adi's blog

Author: NicolaCimitile

manageability-and-operations/observability-and-manageability/oci-monitoring/README.md

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 Use Monitoring to query metrics and manage alarms. Metrics and alarms help monitor the health, capacity, and performance of your cloud resources.
 
-Reviewed: 22.05.2024
+Reviewed: 28.08.2024
 
 # Table of Contents
 
@@ -15,6 +15,7 @@ Reviewed: 22.05.2024
 - [How to feed OCI metrics to Security Onion Grafana](https://learnoci.cloud/how-to-feed-oci-metrics-to-security-onion-grafana-2dd1ceac3f71)
 - [Use Oracle REST API call to manage OEM assets](https://medium.com/@eugenesimos/supercharge-your-oracle-enterprise-manager-cloud-control-13-5-d264e7371ec9)
 - [Customised Alarm Notification in OCI](https://karthicin.medium.com/customised-alarm-notification-in-oci-e5b367ca20bc)
+- [How to monitor the resource usage on your OCI Instances using Cloud Guard Instance Security Queries](https://learnoci.cloud/how-to-monitor-the-resource-usage-on-your-oci-instances-using-cloud-guard-instance-security-queries-342836ca2811)
 
 # Useful Links