^yupp easiest way is get a socket and wrence and try and turn the crank from the pullie,if you can then your better off just takeing it apart.dont try and turn the car over with the key then your just fucking up everything else..... first step if it does not turn take off the oil pan and see whats wrong.

the bad.you will need to rebuild alot.you will need a new crank/all 4 rods dont just replace one,then have the head checked by a machine shop