@Yiyi Zhang  if you look at property records either online or at the courthouse, for each property besides providing the property address, it also provides the mailing address of the owner. 

People online like to paint rosy pictures about how much money their short-term rental makes.

Have been reading more online about HMLs and how to best use them for getting into Flipping.

My tenants sign up for a Baselane account and they can pay via ACH, debit card, or credit card through the online software.

Due diligence: search the contractor online for licensing info and more.

But in all transparency, I'm already leaning very heavily on just learning by myself via online, YouTube,  Bigger Pockets, books, and Carleton Sheets No Money Down course.Thx in advance for any input.

Online it says there is currently no rent cap, but there is a new law being proposed that caps it at 10% and for new tenants, only 15% above what the previous tenant was paying.

Any input would be appreciated. don't do townhouses that's crazy. three story walk ups. don't reinvent the wheel. make them way smaller. 2 beds, 700 sq ft. check some posts I have online I have Floorplans and elevations of the triplex we build infill for Columbus Ohio 

Run through some of the features you will need like setting up a property, moving in a tenant, receiving rent payments, and publishing online applications and see which one works the best for you. 

We have been doing our homework, educating ourselves by reading books and watching educational videos online about how to better structure a company/ies for real estate investing.