Battlestar Galactica

So im 11 min in and i have no idea whats happening. There's the crazy dude dreaming about some girl and the aliens or robots (not sure yet) are attacking every 33 min.

What em i missing? Em i supposed to watch something before this (i presume i do, because of the all what happened before thingy on the beginning)

And there's also the vampire from Being Human (the us version).

Also, OOTD and what i bought are coming up today, possibly very soon.