Step-by-step explanation:
Be organized: You won't lose what you were working on and it will be easier to sort out.
Follow along: Don't write those LONG sentences. Find ways to shorten them, but keep the important facts.
Save time: Use abbreviations and symbols.
Don't take time on stylish: If you want to highlight and color, do it after you have all your main notes. This way you won't be asking what to write if you miss something.
So that's all the things I use to take notes. Hopefully it helps :D