To me a house hack will most likely work in Tulsa - I haven't done any research on that area, but as far as I know it's not a crazy market like places in California etc.Also read a lot, get some books from your local library or purchase some online.

Husband is interested investing in them, but I cannot find ANYTHING online about them no reviews ANYTHING!!

We use DealCheck to underwrite deals and QuickBooks Online for everything related to accounting and budgeting.

Best experience is hand on training, and not some workshop making you go back to pay for free information online. 

Thanks, Haresh I couldn’t find the numbers you mentioned about them online.

I use QuickBooks Online for all of my clients.

@John Lasher If you are still looking to spend $20k-$30K for a coach, I would be happy to take you up on that offer :) For full disclosure,  I will share with you precisely what you can learn online/ perhaps even entirely through these BiggerPockets Forums but that doesn't address the reason why most are still unable to purchase larger assets: creditworthiness and capital relationships.

Although I had heard about them allover online, I was not sure how to find one.

Networking, local meetups, door knocking, mailers, wholesalers, online forums specific to your area of interest.  

On-line Auction Foreclosure Website.