Well we can&#x27;t use those. But, for another commenter, I just found this:<p><a href="https:&#x2F;&#x2F;www.coursera.org&#x2F;course&#x2F;comparch" rel="nofollow">https:&#x2F;&#x2F;www.coursera.org&#x2F;course&#x2F;comparch</a><p>Maybe check it out and see if you&#x27;d recommend it. A qualified opinion would help me know if I should just post it next time topic comes up.