[add a chart repository]
$ helm repo add bitnami https://charts.bitnami.com/bitnami

[able to search the charts in repository]
$ helm search repo bitnami
NAME                             	CHART VERSION	APP VERSION  	DESCRIPTION
bitnami/bitnami-common           	0.0.9        	0.0.9        	DEPRECATED Chart with custom templates used in ...
bitnami/airflow                  	8.0.2        	2.0.0        	Apache Airflow is a platform to programmaticall...
bitnami/apache                   	8.2.3        	2.4.46       	Chart for Apache HTTP Server
bitnami/aspnet-core              	1.2.3        	3.1.9        	ASP.NET Core is an open-source framework create...

$ helm repo update

[install a chart]
$ helm install bitnami/mysql --generate-name
NAME: mysql-1612624192
LAST DEPLOYED: Sat Feb  6 16:09:56 2021
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES: ...

[list]
$ helm list  (OR)  $ helm ls
NAME            	NAMESPACE	REVISION	UPDATED                             	STATUS  	CHART      	APP VERSION
mysql-1612624192	default  	1       	2021-02-06 16:09:56.283059 +0100 CET	deployed	mysql-8.3.0	8.0.23

[uninstall a release]
$ helm uninstall mysql-1612624192
release "mysql-1612624192" uninstalled

[request information about that release]
$ helm status mysql-1612624192
Status: UNINSTALLED
