I don't have much to offer in the way of experience yet, but I would say these 2 books have really taught me a lot https://www.biggerpockets.com/store/rental-property-investing-physical https://www.biggerpockets.com/store/brrrr-ultimate . 

If you will do a search on those topics using the magnifying glass tool above, you'll find tons of detailed articles on those topics.Example, I have a relative who has money in bank CDs earning 1.5%. 

Here's another Bigger Pockets blog post 10 Tried & True Strategies for Finding Cash Buyers.By the way, I used Google to find those articles. 

Here’s an article that really has some good data on tax rates and where people appear to be migrating to: https://smartasset.com/retirem...

I helped an old individual out of a housing situation where they physically were unable to finish the rehab.

When you buy a condo/townhouse, do you own the surrounding land that the property sits in top of (like the front yard), or do you just own the physical property itself?

See the link below to an old article on their website that will help give you some clarification.https://arbor.com/blog/fannie-mae-freddie-mac-or-banks-which-apartment-loan-is-best-for-you/

If you were wandering why it is so hard to find/buy anything this article may shed the light. 

Like many of the other recent newbies, I've been lurking on this site for some time, reading forum posts, reading articles, educating myself with books, and keeping up with all of the BP podcasts. 

Have a look at BP's blog where new articles are published everyday: https://www.biggerpockets.com/blog 4.