Can someone clarify Texas tenant laws?

[David P.]

Howdy folks, 

I am trying to understand tenant laws better in Texas. I am trying to establish a community that has long-term rentals, rented out on a weekly basis. If the "guest" is there for a certain amount of time do they then become a "tenant"? Operating a lean model which can't afford the whole 60 day process of eviction. Needing to fall under the 5 day warning like hotels can issue. Also have a friend who lives in NY which I understand have their own laws, but she had to go through a formal interview and application process for her to purchase an apartment in a NYC building. Isn't that screening or illegal or something of the sort? Can we do something similar here in Texas? 

If anyone has any adequate resources, it'd be greatly appreciated. 

Kind regards,

David