Omega 3's for Beginners Part 1

I've used, sold, and promoted Omega 3 supplements since 1992. I have learned a few things since the early days of fish burps, and the dialog about the subject has changed quite a bit since that time. Here is an introduction to the subject for people who have heard of Omega 3's but don't really understand if/why they need them, or for coaches and trainers who could use some talking points about the subject.