@Quentin Tai Welcome to Biggerpockets. Rich dad Poor dad is a Great book. I re read it every year. Robert kiyosaki "The Cashflow Quadrant" Book is my favorite out of the bunch. That's another awesome read. I applaud you for taking the step to learn as much as you can on your journey. I recommend that you target one market and learn as much as you can. Get to know the difference between A Class B Class C Class and D Class Properties.
-A Class Would be Targeted for Appreciation Purposes not so much as Cashflow.
-B Class Would be Appreciation with alittle added Cashflow
-C Class Would be Stricly Cashflow
-D Class Would be Lucky to get anything. I recommend staying out of D Class anything.
For Ex: Places like Canton and Federal Hill are considered A class. You wouldnt be getting Cashflow. But Appreciation thats where you would win.
*Side-Note: It all depends on What you buy the property for also in most cases.
But with that being said you have come to the right place for sure. Biggerpockets is Awesome! it has helped me a ton on my journey. Best Of luck with everything! Keep learning and The key is To Never Give up!.