Get API Key

This tutorial is taken from official Google Maps documentation

1. Go to the Google Developers Console.
2. Create or select a project.
3. Click Continue to enable the API and any related services.
4. On the Credentials page, get a Browser key (and set the API Credentials). Note: If you have an existing Browser key, you may use that key.
5. To prevent quota theft, secure your API key following these best practices.
6. (Optional) Enable billing. See Usage Limits for more information.