I just got a Contax 159 MM with 50mm/1.4 lens. Seems nice and I have figured all the obvious stuff out, but I can't figure out a couple of things:

I can't get the self timer thing to wind.

What is the difference between modes HP, P, LP, and A on the shutter speed dial? I'm familiar with the A, but not the rest.

Is there suppose to be a f-number display in the finder?

Why is the 1/125 LED lit all the time?

Can the exposure lock be changed without offing it?

On top there is a little window almost under the winder lever. Is this an LED? What does it mean?

Thanks for the help.