on the other hand, ask them to allow you to test and clean rather than them give a hearsay appear and disappear story.

Short answer: STR and REPS are TWO DIFFERENT tests, unrelated to one another. 

It's the best way to test what you like and don't like in a low risk environment.Once you've done this, you'll probably have even more saved up and experience to make you more confident in choosing a direction.If you decide to just dive into one of these markets and strategies, I'd recommend focusing on your personality, goals (cash flow first or something else) and how much time you have.

Once you have a shortlist, sign up for an account with each one and test them extensively to see how they function.

Perform due diligence, including soil tests, environmental assessments, and surveys to ensure the land is suitable for construction.

9- Does he take real estate license test? 

entp.hud.govYou also want to make sure you run the math to ensure it passes the "Self Sufficiency" test where the unit rents must support the PITI by using the 75% and vacancy calculation. 

Once you have a shortlist, sign up for an account with each one and test them extensively to see how they function.

Are you guys testing your rentals for that?

They have already tested what works and doesn't work.