First, you need a Google Analytics account.
If you have a primary Google account that you use for other services like Gmail, Google Drive, Google Calendar, Google+, or YouTube, then you should set up your Google Analytics using that Google account. Or you will need to create a new one.
If you have a primary Google account that you use for other services like Gmail, Google Drive, Google Calendar, Google+, or YouTube, then you should set up your Google Analytics using that Google account. Or you will need to create a new one.
This should be a Google account you plan to keep forever and that only you have access to. You can always grant access to your Google Analytics to other people down the road, but you don't want someone else to have full control over it.
Big tip: don't let your anyone (your web designer, web developer, web host, SEO person, etc.) create your website's Google Analytics account under their own Google account so they can "manage" it for you. If you and this person part ways, they will take your Google Analytics data with them, and you will have to start all over.