Google Map API Key

Sign Up for the Google Maps API - Google Maps API — Google Developers
https://developers.google.com/maps/signup
申請 Google Maps API - Google Maps API — Google Developers
https://developers.google.com/maps/signup?hl=zh-tw

Google Maps JavaScript API V2 Basics - Google Maps JavaScript API 第 2 版 (已不適用) — Google Developers
https://developers.google.com/maps/documentation/javascript/v2/introduction?hl=zh-TW#Obtaining_Key

Google APIs Console
https://code.google.com/apis/console/