@Ed Zhao there is the cap you buy it at and then the stabilized cap that you achieve by optimizing the use of the property. 

Use Zillow and rentometer.com to get data and analyze a few from your home to see what type if returns there are.If these meet your investment criteria then start looking in person.

My second tip is I would build a 30-60-90 day plan on what you want to achieve ... not a plan like “I want to wholesale my first property in 90 days” but more like what concise and specific ways will you be finding that property ... moving forward on it etc. hope this helps.

I have practiced using the calculators and there are terms I don’t understand and don’t know where to find the data.

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I am realizing the 70% may not be achievable but that does not mean it can not be profitable.

See what they sell for.Over time you will get a sense of the market.You can pull data off the web, you can look at listings and sales online but there is no substitute for putting eyeballs on these properties.2.

That could sound selfish but it is widely understood that the great things that we want to achieve and the number of people that we are aspiring to help will be a challenge if number one is not taken care of.  

I have $300K cash right now which I don't have a way to invest  (If I spend 6 months and put $50K out of pocket on each BRRRR to achieve $1000/month cash flow, then I need to flip 6 properties to spend these $300K). 

Another important is crime and that data is available as well.