Hi,
Can you please tell us your electronics, programming, arduino, hardware experience?
Your previous threads indicate you can write code.
Is this a school/university assignment?
We will help you write the code, but you must first make a start.
First write some code that reads the temperature and humidity of the DHT11.
LOOK in the examples of the Arduino IDE for DHT11 sample codes, this will get you on your way.
If they are not there then you need to load a relevant DHT11 library.
I am surprised you have not Googled
arduino DHT11
There are literally 1000's of links. (Over 1.1million to be exact)
Tom... 
