New to RE + Looking to invest

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Hey I'd first like to start out by saying that I am 18, just out of high school. I've spent the past 4 years of high school bored of what my future might be, and have done everything I can to learn about different ways to making money. After ruling out the stock market (too much to start investing + too high probablity of loss) and opening a home business... I have landed on real estate.

After searching around and reading a bunch of stuff on real estate investments, I have determined that the best place for me to start would be by purchasing foreclosures and reselling them for a higher price. I haven't found much info on how to do this, and was wondering if it was at all possible? I have actually found a property listed for $2,900... 2 bed 2 bath single family unit... that I am willing to purchase.

What is my next step? Can I just go buy it and relist at say... $6,000?

With limited money I am trying to build up credit (and cash) to make some larger investments. Is this the right way to go?

ALL feedback welcome, posative / negative... i'm willing to take any opinions you folks have. Thank you.