What is the simple easy way to make resberry-pi to webserver and attach it to cloud.I search a lot but no one has easy way to make webserver. I want to send text data to resberry-pi and then use text to make arduno work.
"...make raspberry-pi webserver..." is a very broad term. It all depends on what kind task you want that server to accomplish and what kind of server you want to set up for that. First and foremost you would need a linux(or other) OS installed in your Pi. Then based on what you want to do, you can set up a web server in your pi like Apache, nginx, node etc. And taking data and attaching it to the could can also have a variety of purpose, are you planning to make a proxy to an Amazon web service? or something else. Here are a few links that might help you, but if you want furhter help please, be more specific
Using pi as a proxy cache https://the-server.ninja/2016/03/26/using-a-raspberry-pi-as-a-squid-proxy-cache/
Node server on Pi https://nodered.org/docs/hardware/raspberrypi
Pi and AWS http://docs.aws.amazon.com/iot/latest/developerguide/iot-sdk-setup.html