So basically, I have my own personal site where I write about what I learn and study. I use it to write notes and details on what I am working on.
I specifically try to avoid posting anything directly copied from class and anything that included what rightfully belongs to the professor i.e. the professor's lecture notes and etc.
The only things I share are my notes taken from the textbook and what I write for the class after it's been graded. Also, the site is hidden from search engines, but can be still found if people have the link (which only 5 people know of and none are classmates).
That being said, is it still immoral to post what I learn and so forth? I do my best to make sure to give rightful credit, but I still doubt the right to share.