Notes disclaimer (some stuffs worth mentioning)

Most of the sentences in these notes are not written by me, they are copied from textbooks / other sources / AI.
This is not a substitute for textbooks, these lack a lot of information (and maybe there are mistakes), I just try to make it easier to understand for people (and maybe share some tricks).
This website is not good, I apologize for that, I'm a newbie web developer (LLT is better than me), but I will try my best to make it better.
I will try to add more content, but I'm not sure how often I will update this, so check oftentimes maybe?