I am not the greatest note taker in the world, but what I do is functional. I use the traditional roman numeral outline system that does not have any roman numerals due to the influence of various computer science classes that I took years ago. I write enough information in order to get the general idea of the work on which I am taking notes as well as any important information that may be useful in the future. For history, I have also made it a point to write any relevant bibliographic information and where certain paraphrases and quotes came from within the writing in question. Although I am impressed by the use of various color schemes and pictorial methods of note taking, I am too lazy or never have time to do any of them. Black and white is fine with me.