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What are my investment options in real estate?
If you're looking for a well-rounded view into what it's like to actually own/manage real-estate investments, plus how you can scale things up & keep the management workload relatively low, have a look at the Bigger Pockets community.  There are blogs, podcasts, & interviews there from both full-time & part-time real estate investors. It's been a great resource for me in my investments. More generally, your goal of "retiring" within 20 years is very attainable even without getting extravagant investment returns.  A very underrated determinant in how quickly you build wealth is how much of your income you are contributing to investments. Have a look at this article: The Shockingly Simple Math Behind Early Retirement