I absolutely love chocolate! Do you like? It is actually made of liquid cocao! 
I love it!  How is it made?
Well Cacao nibs are fermended seeds of the cacao tree... the shells are removed and then are ground into powder. 
They are fermented? I didn't know that. Is there roasting involved at some point?
Yes, actually, after being fermented they are dried, cleaned and then, like you said,  roasted
Interesting. And is dark chocolate made differently from milk chocolate?
Well it is typically sweet and that is because of the amount of milk and sugar we add- so dark chocolate is just more pure.