We required Govt issued photo ID, pay-stubs, and our application filled out online,completely, without blanks and with sufficient, accurate info to contact all references. 

My properties will go to my kids to sell when I pass, they can do what they want with the money, it will be somewhat tax free for them ( PA has an inheritance tax). but to retire, IDK, depending on what you want to do and your life style, PA does have a lot of choices of life styles, the town I invest in is a nice small town, like I have lived in all my life, but don't know if I would retire there.

And that is fine, as long as they have no choice but notice that your mailer is about buying houses in cash! 

If you decide to continue to give these tenants a $400-500 break on their rent that’s your choice.

As for going into commercial, it is really a matter of personal choice: do you want to stick to what you know or prefer to grow/scale. 

you got 2 choices... hubspot, and mautic .. 

I highly recommend visiting FL before making your choice.

I am personally biased as my software of choice is QuickBooks online, just because it's the one I'm most familiar with.

You have to start somewhere and while I agree the BEST education is doing it, you still need background and general info on the strategy of your choice, know how to speak  the lingo, understand contracts, market analysis, etc.That said, there is no one way fits all but the point is, get some basics down (which it sounds like you have started already) and then go after a deal, either on your own or with another investor where you can get on the job training. 

@Michael BonannoTurnkey properties are a good choice for new investors but it is important to realize that the majority of the value has already been created, so you will not see massive appreciation.