A Google account is required to create different Google services like Google Analytics and Google Search Console. You can use the same Google Account to login into all your Google services. This includes accounts for YouTube or Google Docs. A Google Account is also a Gmail email address. So, all email alerts from your Google services go to that email address. If needed, you can forward these alerts to another email address so you don’t need to check multiple email accounts.
If you would like to learn how to setup a Google Account, check out a companion article on Digital Marketing Extreme.