This section will be most useful to people who have to give lectures or talks on cytometry. We have gathered together several sets of lectures, contributed by people who have already put in a lot of time preparing the material. To make it really useful, we have provided you with the ORIGINAL POWERPOINT files. This means you can take what you want and alter them as necessary. Don't forget to give some credit to the original author, even if you just mention that you modified some of their slides!