Hi. Contact the Chinese Embassy in Delhi for visa details and had the visa ready before you are leaving. Book the round trip air tickets to Shanghai. For tourists, the ideal place to stay is nearby Nanjing Road, People's Square. This is the city center with convenient transport and shopping places to go. It is very good to have an escort, but not essy to find a good one. I have been there because my friend worked in Shanghai. You can look for travel companions too. Collect more infomation about Shanghai before going. It will be a lot of help.