I bought a pair of Samsung front load washer/ gas dryer for $1350 + tax (electric dryer pair would be $1250), with white-glove service.It's possible to find better deal (for similar quality stuff) from elsewhere but one would have to be lucky to find one.

I believe I need to get pre-qualified once more now that my financial situation has changed, so I'd like to ask all of you - How do you find and effectively vet mortgage brokers in your area?

If it was possible to do a targeted mail campaign directed to a potential Seller you know something about, even general demographics, that might have a special effect. 

I would like to know some good books or effective ways of educating yourself without going to the gurus.

Always check what avenue is a best financial fit for your budget and go from there 😊

While they fit the latter part, I am nervous to violate any laws. 

By analogy, this would be like having airplane passengers wear parachutes instead of focusing on what it takes to keep the plane in the air.I think a better way to protect your equity is to:Maintain the condition of your properties and operate fairly and ethically with constant regard to the lawPurchase insurance to cover any inadvertent negligence and/or simple bad luckVest title in a business entity that fits your partner, business, and tax strategyGood luck on your purchase.

I'm definitely open to learning more about the market to see where/if I can fit in someplace. 

You are correct as inventory is increasing, and will effect the supply/demand equation.

I couldn't give you a simple answer that would help you- you've gotta build your own recipe.Overall: Efficient but effective marketing.