different people feel different things. It also depends what you see. If you see something scary you might be scared. If you see something sad you might feel sad.... It all depends
Yes as otherwise there is no point in going if you don't know anything about art as if it is an art boarding school you will do rubbishy at all the art lessons which you will be in 50% of the time
Like most things, the more you practice, the better you get. In art and design experience also helps to develop your aesthetic sense, and trains your eyes to better evaluate what is in front of you...