login at -- http://okcorral.okstate.edu 
How to use OKCorral -- OK~Help Guides 

First, you should create a LionKey/D2L account and write down your login email address, your user name and password. If you have any questions regarding creating your D2L account contact CTI at ext. 2008 or ext. 2001. 

Also, you can go to the CTI website and read about creating a new D2L account. There are videos and text in PDF tutorials on the website that can help you.

OK Corral LoginHelp Guide