The keys to good note taking are the five "R's":

Record * Reduce * Recite * Reflect * Review  

You can develop your own system based on a few elementary strategies:

Get a good loose leaf notebook.

This will enable you to add, delete, and re-sequence pages and materials.

Develop an organizational system; include:

headings, the date, even the number of the class (e.g. 3/34)

any guest speakers' names, including your fellow students' contributions

a system of "sections" to organize your notes

Leave plenty of white space for additions

Class notes

Identify the main points

do not try to quote the lecturer, instead capture the main points;

Include the following

Theories, Concepts, Cause of Action

Rules, Standards, Test

Exceptions

Policy

a space for editing or annotating what you have written, 

linking information from the cases or other sources, 

adding definitions

a "condensing" or summary section.