The easiest way to become a member is by paying online with a credit card or bank account.
You don't have to have a Paypal account to complete this process.
One year membership is only $42, which includes $2 online transaction fee. Simply click
Alternatively, you can print, fill out, and return a pdf membership form with payment of $40 (in person, or by US Mail).
You can also obtain a membership form (and/or pay) by one of the following other methods:
P.O. Box 343
Lisle, IL 60532