Saving money for buying a car

I have been at work for a few months. When I was at college, I planed to buy a car after working. But I found out that I would be a managing trainee at the first year with little payment which wasn’t enough for the spent of buying a new car. Maybe because I’m not good at finance, I often buy something useless, like shoes, clothes, wasting some money. Fortunately, I don’t have credit card problems. Now for my dream of buying a car, I start my plan of saving money.