for number 1: the shutter not firing.. RTFM. It will not fire unless there is film in the camera or you can open the rear door.

for number 2: the rangefinder not working. Thank you Walt. With the back open, I could see the linkage between the lens and the rangefinder. There was a pin from the camera body and it was stuck in.
I fiddled with it for a few minutes and then it popped out. Then i cleaned it with a swab and then applied a thin watch oil. Now it seems to be working fine. Yay!