sir with regards to shopping, there's a weekend market they call. and literally it's only open on fridays and saturdays. (when were there) food is ok, mostly like filipino dish though some of the foods are real spicy. with the transportation, get a map upon arriving at the airport (it's free), you could easilly follow the train sched and route. but if you want, taxi would be the best there's a mall in downtown bangkok where you could buy cooked food (it's at the ground floor, foods are put in banana leaves and they sell it by the kilo) and buy pasalubong which is tamarind. JUst be carefull with your belongings sir, even in your hotel room, don't leave any valuables.)
floating market, crocodile farm, golden budha, forbiden temples ba yun. yung may malaking statue naka higa. snake farm, may kinuha kami tour kasama lahat yan. nakalimutan ko iba pa pinuntahan namin.