How can i save up for a car?

I have a savings and checking account equipped with a debit card as well. I, however, am very lost in the saving money department. On average i get paid between 6 and 8 hundred a month (McDonald's) and have no expenses. I need some kind of a plan to help me buy a car or finance, i.e whatever before august first. I need all the help i can get. Thanks in advance