What's Tensor by Dan Fleish https://www.youtube.com/watch?v=f5liqUk0ZTwTensor Calculus by Pavel Grinfeld https://www.youtube.com/watch?v=e0eJXttPRZI

How do I use the heading and title names to organize my writing. Maybe I should use the title to categorize my writing whether it's a diary or a memo or things to note or noteworthy.