Hello, Seeking advice for most profitable field!

[Chancellor DePaul]

Hello Everyone! So my father recently got engaged to his girlfriend. Nothing special about that except for the fact that she's worth over $50,000,000. She isn't very protective of her money and her main goal is just making sure her three kids lives and mine a successful. Over the past year she has bought 3 Apartments and 1 condo because she wanted to invest in real estate. The problem is that it has become to stressful to her and she hates being a land lord. That being said she has talked about potentially investing in more properties down the road. The plan that me and my father have discussed is for me to manage the properties once I graduate. Then sometime after my first year of managing I plan to write a business plan to invest in more properties. We have brought this up to her and she seemed open to it saying "will see when the time comes". My goal is to at the end of the five years sell the new properties added under my management, then split the profit with my family.My question to my readers is what do I invest in? I've seen these amazing success stories of people making profits with no money to start on this website, this is why I see big potential if I could get potentially millions from my family to invest. Any advice would be awesome thanks guys!