ol' slant is dead... need help!

So I took a 45 minute drive to the next city and had a crack in my heater hose which in turn I leaked all my anti freeze out. I had to drive back a bit and in the process I noticed the car was ticking very loudly and when I slowed I noticed it was a grinding knock :/ so now I have come to the conclusion that I've spun a bearing. Where do I start with the whole rebuild or replace process? Can I just start by draining my fluids and unplug/label everything to get ready to pull the motor? Or will I do some damage to an already damaged motor by letting it sit with no fluids in it? HELP! haha