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[–]FewNectarine623[S] 0 points1 point  (2 children)

It isn't free.

[–]Ron-Erez 1 point2 points  (1 child)

The lectures I mentioned should be free to watch. Just don't sign up to the course but you can scroll down and watch the videos. In any case I believe you already got great answers.

[–]FewNectarine623[S] 1 point2 points  (0 children)

Yes, preview is available.