Go to https://accounts.google.com/signup.
Enter your personal data.
Enter your mobile phone number and birthday.
Click Verify to receive a text message.
Enter the code you received from Google to verify your account.
Click Skip (unless you want to get more from your number).
Scroll down on the T&C’s.
Check the two checkboxes and click Create Account.
Click Confirm.
You’re done - your Google Account has been created.
Next Step: 9.1 Create a Google Tag Manager Property