My computer dose not recognise my Arduino Uno I had never used Arduino before. When I tried to interface my new Arduino Uno board to my computer, the computer failed to recognize the board. 

Why isn't the board interfaced successfully? How should I troubleshoot that problem?
Majenko is probably right.  If it is a clone Arduino board you will need to install some CH340 drivers.  If it's an authentic board I would return it as it should work out of the box with the Arduino IDE.