How do I print my certificate after I pass the course

You can print your certificate any time after passing the course by going to the exam history page under the Members tab.  

From the Completed Course tab, you will see an option to "View" the certificate.  Choose this option and you will then be able to download the certificate directly to your computer as a PDF file.  This PDF file can then be printed out just as you would any other document on your computer.