Advice for a beginner/random questions

[Grant Beard]

Hi BiggerPockets members,

I am currently a junior in high school. Through searching the website I have learned a lot and was so impressed with the amount of knowledge people have regarding real estate. I don't know what I want to major in at the moment so I think I may take a gap year or two and join the workforce. I completely understand real estate isn't a get rich quick type of field, but I, through researching, have gained a liking towards it. My end goal is to flip homes in order to put money into multi family rentals. I have read the beginner guides and such but I still have a few questions. I would really appreciate it if you could help me out. 

What cities/areas are good for flipping homes and renting out multi family homes as well? I know this is a very broad question but I want to jump start my real estate career and would be willing to move anywhere. How can I tell if a market is stable and has potential for growth? For example is it hard to flip homes in big cities as there is probably a lot of competition? Also, could I flip homes in one city if there are a lot of opportunities to profit off of them and then get a property manager to manage rentals in another city where rentals have a great return on investment? On the same note, do cities that have great returns on rentals typically have great opportunities for flipping homes?