Picture, logo, title

Welcome everybody

I have few problems with this site: http://www.milosnicywilna.pl/

I would like to ask if is it possible to put logo in the right up corner where is research?

The second is how i can make that title will not overlap.

And the last is if can i change the main picture in this theme. I want to also another picture not only cathedral.

Thank you very much for your help and sorry for may english.