I have to toot my own horn on this one. I put together a PP years ago on multiplicity.Recently I did another one. I got a 
very good response to them. Alas, many of the links in the old presentation are now broken (clearly they weren’t at the time). I cannot repair them since I no longer have the original work. Stupidly, I deleted it (definitely not with malice aforethought).
If you do decide to view them, forgive the many broken links. **Also there are warnings in each presentation that the presentation or certain videos could be triggering. ** Please keep this in mind regardless of the mental disorder you may possess. Now, pop open a microwaved bag of popcorn and enjoy!
Dissociative Identity Disorder – an examination of a controversial mental health phenomenon
Dissociative Identity Disorder and Multiple Personality Disorder – quite frankly this a more updated and sophisticated presentation. There is more information and hopefully it makes the phenomenon of DID a little easier to understand.
Dissociative Identity/Multiple Personality 