I've found both to be good sources of information in the past.

@Saeed BayaniI assume you’re wanting to contact a divorce lawyer as a source of distressed real property leads, not as a client needing the attorney as divorce expertise (LOL).

It has reasonable price appreciation and is also a good source of passive income—a profitable long-term investment.

Also great job sourcing the deal! 

So, now back to the definition of "Investment property"TL;DR - lender is helping me to write the letter in a way that prevents fraud AND allows me STR optionsHere is the definition that was sent to me from my lender regarding the definition: source Freddie Mac second Home Mortgage guidelines The Borrower must occupy the second home for some portion of the yearThe Borrower must keep the property available primarily (i.e., more than half of the calendar year) for the Borrower's personal use and enjoymentThe Borrower may rent the property on a short-term basis provided that the property is not subject to any rental pools or agreements that require the Borrower to rent the property, give a management company or entity control over the occupancy of the property or involve revenue sharing between any owners and the developer or another partyYou were right @John Transue and @Keyla Rosario and @Brent Huling I only need to occupy it part time, and can rent it out with no penalty of fraud. 

This is the best source I've ever seen.

Real estate guarantees a source of passive income, and you can opt to use the investment as your retirement package.

After years of relative quiet, appliance-wise, we had to replace two refrigerators and a dishwasher in three different units.Both refrigerators, different brands, from different sources, arrived faulty.The first wouldn’t cool.

Is there a website or other source of information where I could start to get some basic knowledge on the US housing market rules and tax laws? 

The best lead source I ever found is propertyradar.com and it can do so many things for you it will take an hour to explain.