If you are unaware of what that is, it is essentially creating a plan where you invest a specific amount of money on a regular basis (month, quarter, whatever) in a stock, index fund, or combination of your choosing. 

Check the BiggerPockets store or check out my personal favorite, "Every Landlord's Legal Guide" by NOLO.

AirBnB and other short-term rental laws are going to be different from city to city and the biggest difference is that you'll have to furnish the home unlike having a regular tenant.  

Here it is...the year is 2007We are produce farmers FIL sells farm-we have basically zeroHusband under-educated /only job he ever had (46 yo)I took our lives into my own handsTraveled upstate (NY) Bought a house for cash WITHOUT TELLING HIM (425K)Ummmm-where the F am I getting that moneyWent to local mall with my 3 girls-called him from my flip phone to break the news- he fell silent BTWDrove back home (near NYC)Sold my house for 500k to a mansion owner close by (look up GLENMERE MANSION)Got my RE licenseFound my husband a job-he obvi couldn’t use a computer We are still in that houseWe’ve only lived in 2 houses I now buy houses regularly WITHOUT TELLING MY HUSBAND Because that sh*t is funny.

He said he will pay Security at end of month and pay regular rent which is due on first, on the 11th.

Also a regular corner lot for 79k and its a 6000sf lot.

This site is the best place to start, although I would also recommend attending your local REIA on a regular basis or any other meetups near you. 

Even if the number is 10 or greater, it may still not work because of how much capital you have to potentially pour into the homes to sell them, as well as regular items that come up in due diligence, such as test ad demand.

Read this book... https://www.biggerpockets.com/store/house-hacking-ultimate

I do tell them to get an umbrella policy on top of the regular insurance policy for added protection.