This site describes five steps for developing your note taking skills for university lectures including strategies such as going to class prepared, developing a notetaking method that works for you, and reviewing and editing your notes. Well worth the read! (Jerz's Literacy Weblog )
Have a look at this page (and handout further down the page) for reasons why you may want to use mind mapping and instructions for getting started. * Be sure to open the pdf found partway down the page as it expands on the page content.
More and more students are using their computers to take notes. It's important not to fall in a 'typing every word that an instructor says and writes on the board'. Massey University proposes a set of questions and suggestions which are worth before moving note taking into the digital world.
Mind mapping takes advantage of the associations we make between words or concepts and puts it into a connected picture. Tony Buzan, the inventor of Mind Maps explains the theory and technique underlying the concept.