hello whats the best way to get from the airport ,to my hostel ,its near tian an men square ,

Hi, would you mind to tell me your hotel's name, so I can tell you the most best and direct route.
To Tiananmen Square area from the airport, in general, you can take the airport shuttle bus line 2 to get to the terminal at Xidan Station and then walk to the Tiananmen Square easily.
You can ask the airport staff to translate your address into Chinese at Capital airport.