Please use this online form to join or renew your membership for 2018 (January 1st - December 31st). Fill in your contact information, indicate your membership category, and then click on the "Register" button below. At that point, you will be brought to the PayPal website for payment by credit card or bank withdrawal. If you have questions, please contact the membership coordinator for your region.
Alternatively, you may download this membership form for North America residents and mail in a check in USD to the membership coordinator. European members may download this membership form for residents of the EU and transfer the appropriate contribution amount in EUR to the membership coordinator.