well i have been having some small issues already with the new macbook

it will freeze up occasionally and it wont do anything all i can do is turn it off by holding down the power button. It will also give me a spinning color wheel on some applications and they will never close or do anything. does anybody know the command for force quit? i dont know what could be causing this and would really feel better about my rediculous purchase if it would atleast do the simple functions i need it to do. Damn i dont even have very many things installed.