What’s the best note taking style for college courses?

My sister used to record lectures on a USB sized device. IDK what's it called. Then she would come home and complete her notes because it's impossible to catch everything from a lecture the first time. Some professors would share/sell their presentations.

As for me I had different notebooks for different subjects. I color-coded the things I underlined in books.
Then the notebooks didn't seem handy to me in the long run so I started using post its. I would compile all the important information in a topic and put it in points on the post its and stick em on the relevant pages in my books. My sister on the other hand staples her notes into the books instead of using sticky notes.

Lately I've been thinking of buying a snug portable printer for mobile screenshots of diagrams from google images that I can glue onto my books for reference instead of having to open my phone time to time and sift through folders.

Try getting your hands on short books too that summarize the info from lengthy ones.

If any information I jot down from the internet, I always cite it so I know where to look for details on that topic if ever required, and to be confident that my information was from a reliable source. Because sometimes I write my own interpretations and more often than not they are wrong.

There are many ways though and my sister and I were just average students so I'm not aware of other more clever methods. Still I hope it helps.