How Do I Quit My Job?

I work at McDonalds and I don't really like it there or hate it there.the work is ok but sometimes and ***.I smell like * after work.some managers are bitches but others are like so fun.the rest of the employees are like really good friends...im really close to some of them in work but not as much out of work...I love the ppl there and were like a family.how do I quit from there +++ I have only been working there for about 6 monthes but still...I like the ppl there.what do i do...