I should also say that I am affiliated with BiggerPockets, but as an investor myself I only recommend things that I actual use and that I think you would find useful based on what you've said about yourself, as with any recommendations take them with a grain of salt and think about what is most beneficial to you in this moment where you're at1. 

Additionally, defamation isn’t taken lightly.On a side note, I have no affiliation with OpenDoor.

They do offer an Affiliate program but did you know that it is 100% Optional?

@Chris StevensonI was so glad I spent that $10,000+ on a real estate guru said no one ever (unless they are a paid sponsor / affiliate).

I would also suggest reviewing credentials...50% of the PM firms in the city are not licensed brokers or agents affiliated with brokers....and most of the agents that claim to manage are focused on residential sales...not a great fit.

(It used to be monthly, in-person.)They make money if you buy properties from their affiliates, and can provide additional free, one-on-one guidance via their investment counselors.

@Ali Ahmed I am not affiliated with @Mark Ainley but you may be able to find the list he referenced here on the Straight Up Chicago Investor's Podcast website.

There's a guy who has written a book about it up for sale on Amazon (search "Missouri tax sale") which might have answers to your questions (I have no affiliation with the author).

I am not an affiliate.

Non-Arm's Length TransactionsNon-arm's length transactions are purchase transactions in which there is a relationship or business affiliation between the seller and the buyer of the property.