Frequently Asked Login/Registration Questions

Why did you make all these changes to comcasttraining.com? What are the changes that I should be concerned about?
Login and registration questions
I've forgotten my password, and my e-mail address has changed since I registered. What should I do?
What software do I need in order to use the Comcast Training Center?
I can't get past the login screen, even after I've correctly typed my user information.