There is no substitute for experience, but everyone must start somewhere.  

The husband has verifiable income, but the wife is a substitute teacher.

If she wants it to be real estate related (which isn't crazy, rents hit an upwards inflection point a few months ago due to rising consumer-facing mortgage rates and how "substitute goods" work, and all the real estate builders switching from SFR to multifamily tells you where they think the football is going to be in 2-3 years+), look at shares of some of the Wall Street megacorporation landlords that everyone loves to hate.

If it is a mortgage, it would need to be signed by the LLC, not you personally, and then that's easy and can be done by resolution appointing a substitute manager.

There is no substitution for real world experience, but there is also no substitute for a good education.

@Holly Scott , True, when an agent sets up an "email alert" for you, the software usually blocks the selling agent info, and substitutes/emphasizes the "sender" of the email alert.If you've ended the "buyers' agent" relationship, you might just set up your own email alerts via Redfin.com You can there see the Seller's agent within the ad, likely google them and find a phone #.If you're going to be big time REI, consider getting your own license someday and be your own realtor?

Not usual lending practice, but some can or will underwrite the deal if there is an out where others will step in if the initial party fails.Every economic transaction action will have three of the four fundamentals of economics, land, labor, capital and entrepreneurship, or some substitute.

There is no substitute for being physically present with experienced investors.Let me know if you need any help finding other resources to help you get started!

I would substitute the loan for collateral on the numerous rentals we have with lots of equity. 

Substitution of collateral clause.