cities to explore: big cities: zurich, geneva,(bern,dont forget to rich all the way down to the old city,cus zytglogge will be waiting for you). lol.

tourist attraction:there are a whole lots of tourist attractions, depending on what you like. but try to also rich to interlaken,when you are in bern.

its very easy to visit lots of places in a week, because the distances are not too far. the longest will be from geneva to zurich thats 3 hours with the train. but if i were u , i would book a hotel in bern, cus its very central , from bern its easier to rich lots of places in between 1-2 hours. except if you are traveling south.

dont worry, you will find out lots good places. google and you will find lots of infos on where to go best.

people there could be either very very friendly, if you are lucky, or just very cold if ...
thats why i advice you to go when the weather is a bid warm , like in the spring or so, then people mood are also better than when its cold doing the winter.

gd. luck