Hi sandeep6013,
I’d suggest you to download the SD card image in order to use a wireless connection and node.js, this would help you to set up a webserver that is helpful for an IoT project. The SD card image can be found in this site: https://communities.intel.com/docs/DOC-22226. Check this document on how to set up a wireless card in the Galileo board http://www.malinov.com/Home/sergey-s-blog/intelgalileo-addingwifi. In this site there is an example on how to set up a webserver in node.js http://nodejs.org/. I hope you find this helpful.
Regards,
JPMontero_Intel