Help to make a car with gas,obstacle and light sensor

Friends I'm new at arduino just need a help to get started how to use arduino with 3 sensors .language usage and voltage,etc please help me

Those new to Arduino are advised to start with the simple examples that come with the development software -- blink an LED without delay, read the ADC, etc.

Learn the programming language and then search the web for the many examples of Arduino controlled robot cars.