As a starter member, you can unsubscribe from the emails through your account settings page. Then you would just log out and not log in again.

You're a starter member though, so it won't cost you anything to stay a member.

In case you decide to go premium and then want to cancel billing, here's the video: Cancel Wealthy Affiliate Membership and Stop Billing

Here's the link

https://my.wealthyaffiliate.com/membership/manage