Where to eat, shop, play, etc? is the exchange rate in favor of making a purchase from LV?
Silly question but are you from US?
Get the Eyewitness Guide to Prague. Excellent book.
the Old Town square with famous clock
Day trips to nearby castles
Hotel Petr is very nice and very cheap. Buffet breakfast is terrific. Take advantage of hotel laundry svc.
Eat at the best restaurants. The food the locals eat is greasy.
Prague is exceptionally beautiful. I think it is the most beautiful city in Europe after Venice.