21 year old starting real estate investing

Hello everyone! My name is Stan. I'm from Socal (Los Angeles County) and i'm interested in real estate investing. My goal is to buy/own, rent and sell homes and apartments. I'm only 21 years old and i'm new to this. I've read success stories here and I want to be able to share one some day. I went to college to study accounting and unfortunately I didn't finish because of work. They change my schedule every 6 months. So i'm confused about a few things... I don't have money for a down payment to buy a house so who should I go for that? Will they take me seriously or look down upon me because of my age? Any advice will help! I'm serious about this and I feel that I can succeed in this field. I would like to get with someone in this area to talk and have cofffee or something and learn. I know i'm young but hey... we are the future right?