Pay attention to the class and then start taking notes.
Refer to your previous lecture notes before being ready for the next class
Write legible notes
Keeping your notes organized in binders is a good idea as you can add extra papers in between when necessary.
Use highlighters, pencils, pens to highlight headings and subheadings.
Start a new page for a new lecture.
Leave space for comments or extra notes.
Write fast but cover everything.
Choose a note taking method that you are comfortable with.
Seek clarifications if required.
If something is illogical, clarify and complete writing then and there.
Compare notes with your friends if the need be.