Install Helm

curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3
chmod 700 get_helm.sh
./get_helm.sh

helm version

Create a Helm Chart

helm create myapp
helm package myapp
helm repo index .

Helm add repo and search

helm repo list
helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo update
helm repo remove bitnami
helm search repo bitnami
helm search repo nginx
helm search hub nginx

There are five different ways you can express the chart you want to install

helm install myapp bitnami/nginx  # By chart reference
helm install myapp ./nginx-1.2.3.tgz  # By path to a packaged chart
helm install myapp ./nginx  # By path to an unpacked chart directory
helm install myapp https://example.com/charts/nginx-1.2.3.tgz # By absolute URL
helm install --repo https://example.com/charts/ myapp nginx # By chart reference and repo url

Uninstalling a Release

helm uninstall myapp

Useful commands

helm template . # Verify to template
helm lint # tests to verify that the chart is well-formed 
helm list # to list down the deployed or failed releases
helm list --all
helm status myapp # To keep track of a release's state
helm show values myapp # To see what options are configurable on a chart
helm rollback myapp 1 # roll back to a previous release