My domain name is expiring. What do I do?
If you'd like to keep the website and e-mails running, you should renew the domain's registration as soon as you can. If the domain expires, you will still be able to renew it in a period of a month. Afterwards, the domain will fall into the so called redemtion period and there will be a penalty fee in case of renewal request. If you leave to expire, shortly after the redemption period everyone will be able to register your domain.

How do I renew a domain name?
You can simply click on the Renew link beside it. You can preserve your domain up to 5 year ahead if you like. To renew several domains at once, select them using the checkboxes on the left and then click on the Renew button.