Dear Saranya

Please refer the links given below.I hope it will be useful for you.

http://www.rs-online.com/designspark/electronics/knowledge-item/eleven-internet-of-things-iot-protocols-you-need-to-know-about

http://www.postscapes.com/internet-of-things-technologies/

https://blog.profitbricks.com/top-49-tools-internet-of-things/

Node MCU is the best hardware platform to implement IoT. I have attached the links also to implement the same..

http://www.instructables.com/id/IoT-Arduino-NodeMCU-ESP-12-ESP8266-EN/?ALLSTEPS

https://www.hackster.io/leoribg/using-nodemcu-board-to-send-data-to-devicehub-iot-platform-dccc3f

http://captain-slow.dk/2015/04/16/posting-to-thingspeak-with-esp8266-and-nodemcu/

http://www.instructables.com/id/ESP8266-NodeMCU-v10-ESP12-E-with-Arduino-IDE/

http://www.seeed.cc/project_detail.html?id=232

Prof. you can start basic applications using CC3200 -32 bit ARM controller

thank u ...prof joby for suggestions

You can use arduino YUN or raspberry Pi.

Arduno , ARM Core, Smart ARM, AVR and so many.