How many days do you have? As to some must see places and must do things, here are some suggestion from my own: Get aroud Nanjing Road and walk through the road till The Bund, see the nightscape in the Bund. See Yuyuan Garden and try Shanghai snack in the commercial area around Yuyuan Garden. Buy souvenirs in Shanghai Old Street nearby. Xin Tian Di has many bars and it has old residential house of local Shanghai. For wholesale market, you can visit the one in Qipu Road, replicas available there. If you are interested in historical site, you can go to Jade Buddha Temple. Is this enough for you? If you have more time, you can visit water town or other beautiful cities around Shanghai.