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Welcome to the forum, regarding the lack of support for the course, that's the point really. What they are trying to do is get you to research and learn on your own away from the course which is a valuable skill in this field. That being said we are happy to point you in the right direction if you are truly stuck with something as long as you show you have tried to solve the problem yourself. Take a look at this for a great guide on getting the best answer for your questions.

What exactly are you struggling with for Cain & Able?