Rkimball : How to create Google API Key?
Follow steps below to easily get Google API Key:
Step 1 : Go to Google APIs
Step 2 : If you have a Google account, login, else Create an Account
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Step 3 : On Google APIs dashboard, click on dropdown menu
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Step 4 : Click on New Project
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Step 5 : Click on Create button
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Step 6 : Click on Enable APIs and Services
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Step 7 : Click on YouTube Data API v3
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Step 8 :Click on Enable 
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Step 9 : Click on Navigation menu
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Step 10 : Click on Library in APIs & Services
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Step 11 : Click on View All
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Step 12 : Now you need to enable all the highlighted APIs, that is Direction API, Distance Matrix API, Geocoding API, Geolocation API, Maps Embed API, Maps JavaScript API, Maps SDK for Android, Maps SDK for iOS, and Places API, to get a single Google API key for our platform. Here, we are showing you the process to enable Directions API, follow the same process for other keys
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Step 13 : Click on Enable
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Step 14 : Go to Credentials
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Step 15 : Open Create Credentials menu
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Step 16 : Select API Key
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Step 17 : Click on Restrict Key
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Step 18 : Select None in Application Restrictions, and then click on Save button
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Step 19 :Here is your Google API key Copy it
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Step 20 : Now login into your Rkimball account, go to My Apps, and click on this highlighted settings icon
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Step 22: Now paste the copied Google API Key in the highlighted field.
Note : To increase requests hit daily limit, please follow our tutorial How to add the Billing account details in Google Developer Account to increase requests hit daily limit.