@Mike Lam My suggestion is that you look for a 2-4 unit property, in an up and coming Bay Area location, that you can live in. You will need some down payment, but if you're innovative you may be able to get a 2nd from the seller (are those still kosher for traditional financing, btw) or maybe some first timers loan with a low DP requirement. Take the smallest unit yourself. Manage everything and learn directly from your experience. Focus heavily on a location that will be more desirable 3-5 years from now; transitioning neighborhoods. Also look for properties were you can add value- reasonable renovations as units vacate to attract higher rents, add laundry facilities, or perhaps storage in an unused basement, or extra parking spaces.
The right ones are like gold, as new tech people get pushed out of the more expensive areas. We are in an upward market now and done right, you could pull cash out (due to appreciation) a few years from now and make your next investment. That's how I did it.
I also recommend a book, buy and hold: 7 steps to a real estate fortune, by David schumacher. Yea he's an old timer, but he really made money with real estate, and had a pretty sophisticated way of analyzing and investing in RE. Get the latest addition, as it has updates, but the core of his advise is sound.
That's the way I approach RE, and it has changed my life. I only recommend what I personally know, but there are tons of people here with very different approaches. I suggest that you study the different approaches and see which resonate best for you.