Not much cash, but decent equity and perfect credit

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Hello everyone-

I've been in my condo for a little over two years now and after some modest improvements, I'm very sure I have $50,000 or so in equity. I also have a FICO score that teeters around 800, but my problem is lack of cash. I have some money socked away in stocks and my retirement accounts, but I really only have $5,000 or so of liquid cash - and most of that I'm reluctant to touch as it's my emergency fund.

My question to you is this - where do I start with real estate investing? My ultimate goal is to simply build my net worth, but some quick cash wouldn't be the worst thing in the world either. My first thought was to sell my condo and use the proceeds to put into another undervalued property, sell in two years, and just repeat the process. Is this the best way to get my feet wet in REI? I honestly do not know enough right now to take huge risks. I've been reading these forums for months, but I'm still not sure which avenue I should be pursuing.

For what it's worth, I have extremely strong motivation when it comes to making money. If that means busting my *** for 18 hours a day, I do it. I have NO problem putting in the sweat-equity whatsoever.

If someone could just steer me in the right direction, I'd be eternally grateful. Thanks so much. Looking forward to your replies!