ArgoCD is a GitOps tool that helps with your GitOps workflows. ArgoCD can be used as a standalone tool or as a part of your CI/CD workflow. ArgoCD works with Git as a source off truth, with current Kubernetes manifests, or with Helm charts.
This video demonstrates how to install the ArgoCD Operator on OpenShift 4. It also goes through how to deploy an application across multiple clusters from a single repo.
This is a video of a Twitch stream that introduces the concepts of GitOps and goes over how to use ArgoCD as a tool for GitOps workflows.
Additional resources can be found at the following locations: