You can renew or sign-up as a member or you can renew or sign-up as a couple.
After you select how many you are registering click the register now button. At this point you will be required to fill out all the pertinent data for each person you have selected. Note, there are required field and some that are not.
You will then go to the check out page which is like every other credit card checkout you have been thru. To re-new your membership the price is $40 per member. New members will pay a 1 time $50 initiation plus their yearly dues of $40.