I've just started looking into Eldar fluff; weapons, evolution, The Fall, Slaanesh etc. All I can say is :confused: Man it's confusing!

Anyway, to my question. What exactly are Chaos Gods? Slaanesh was made by loads of Eldar souls, which sorta merged to create Slaanesh (still confused about that bit). But what form does a Chaos God take? Do they have any physical form at all, or are they just...there? Or are they just something that affects the brain, so in some ways they aren't even there, just the souls acting strangely.

I'm really confused. Like normal. Can anyone help?