How to create custom label?

How to Create Custom Label? & Uses of Custom Label in Salesforce

1. go to setup under your name

2. Left side menu –> go to Build –> Create –> Click “Custom Label”

3. Click “New Custom Label” button and populate required values and click Save

Sample Code :

Apex Controller : System.Label.TestURl
VF Page : {!$Label.TestURl}