Yes, of course, you can always cancel your membership and sign up again at a later time. To cancel, click on MY ACCOUNT in the top menu on the right side.
Click on the SUBSCRIPTIONS tab on the page and look for the CANCEL option on the right. Click that and then confirm that you want to cancel your membership. You will receive an email confirming that your subscription has been cancelled. If you do not receive that email, please check your Spam folder.
You will still have access to the site until the end of your month at which point you will need to renew your membership for continued access.
You are welcome back at any time.