Citizen Kane

This movie gets more and more interesting.
First of all, i find the filming techniques very fresh and different for an old black and white film. A few things i especially enjoy as aspects of this film:
1. how they step over each other's lines. They're so pro at it, its amazing. but they do it so frequently int he film that i think they over do it sometimes. Seriously, if there's ever a line-stepping competition between 'All Quiet on the Western Front" and "Citizen Kane", Citizen Kane would definately win by a milestone.
2. The accompanyment of epic music that really sets the mood of gloom and sinister-ness in this movie.
3. The usage of lighting to really pinpoint one object, for example, when an inquirer went to investigate the meaning of "rosebud", he goes into a museum where the lady hands him a thick book. This book, however, was put directly in the center of bright light shining through the window. The lighting makes the book seem holy, as if portrayed as the holy bible. Then we know for sure that this book or diary is extremely important.
4. How many transitions are made through a picture taken for a newspaper for example.
   One example of this would be when the camera lingers on the hosue number of Susan Alexandra's house, but then the house itself becomes a picture on the front page of a newspaper.

A few questions that came to me while watching this film:
1. How does the director make Kane and others look fatter and older?
2. They smoke so much in this movie...does anyone them actually die from lung cancer or anything later on?
3. What is the meaning of monkeys in this film?