I am doing a few courses on Coursera and youtube, while watching the lectures I usually take some notes, adding extra explanations and examples on things that I found difficult to understand. Now, I am thinking that I can clean them up a little and post them on my website, but I don't know if that would be considered plagiarism or otherwise inappropriate.
If I do post anything I will properly cite the course I am referring to and not post any quiz/assignment questions or answers, but also I won't really be adding any original work of my own, just a condensed summary and maybe some additional examples that I found useful from other sources.
Would something like that be a good idea?