How to get a Key
1. Follow this link and click on Get a key:
Google Maps APIs – Get a key
2. Agree with the service Terms of Service:
Google Maps APIs – Agree with the terms
3. Choose a name for your new key and specify the websites on which the key usage will be allowed. If you don’t need any website restriction, just put an * in that field (but don’t leave it blank, unless you are having issues with *). Then click on Create:
Google Maps APIs – Generate a key
4. Copy your API key, and click OK
Google Maps APIs – Generated key
5. And paste to the Google Maps API Key parameter field on your component.