Can someone lay out the whole BSG History,
 

before Saga of a Star World? Stassrt out with the Reptilian Cylons, the Hasaris, the Delphians, and tell me how it all began? I'm a bit fuzzy on all of this. I don't even know what type of beings the Hasaris and Delphians were? Were they reptilian too? Arachnid? What? And when did the humans meet up with all of these characters? Who can lay this all out?