We talk a little bit more, about her job, and such and she tells me that if I do evict her and we can't work anything out, being my tenant is saying that she will have nowhere to go if she is evicted, that they are going to provide her a hotel and give her money for food, etc. 

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? 

You just have to go with off market leads either from wholesalers or from other sources you come up with (i.e. foreclosures lists, probate filings, etc).

I wish my grocery store would worry about how much money I make and stop increasing the cost for food.

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.

A very good source of local analysis is rereport.com 

What are the best sources to receive local real estate data I.e( market inventory, average days, median sale price, etc)?

How are you sourcing your notes?