You can quickly change your account information through the following links:

Change account password: https://myaccount.google.com/signinoptions/password
Change recovery email: https://myaccount.google.com/recovery/email
Bind phone number: https://myaccount.google.com/signinoptions/rescuephone
Enable two-step verification: https://myaccount.google.com/signinoptions/two-step-verification
Sign out of other devices: https://myaccount.google.com/device-activity
Change Language: https://myaccount.google.com/language