While exploring forms, it is useful to use a simple "echo" CGI program, which will simply echo back the name/value information your form submitted (https://cscie12.dce.harvard.edu/echo).
<form method="post" action="https://cscie12.dce.harvard.edu/echo">
Email Address:
<input type="text" name="email"/><br/>
<input type="submit"/>
</form>
Copyright © David Heitmeyer