It sounds like she has power of attorney over the house because it was a family member's home that died.

Should me and my wife go rent a house to live in so I have better buying power and can use that down payment money to get a few more properties?

When a tenant comes in contact with the owner it often undermines the managers power.

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I would recommend however opening a Roth IRA retirement account as the power of compounding interest over your working life will be immense, simply put a small portion of your income and dollar-cost-average over years.Most importantly, don't spend on liabilities and save most of your income to invest.

The greatest "power" of depreciation is that its a non-cash expense --- you don't have to spend any money to get the deduction. 

The power behind Facebook Ads is the ability to leverage data on users to help us reach our target audience.

If you have a unique deal and need helping funding it they will bend over backwards to make sure they do everything possible within their power to close on it, even tossing out low appraisals (I did that while I was an UW) on certain deals where the appraiser was being a moron.

It costs money to have the servers and the bandwidth and the staying power for Zillow to survive and prosper.

Then, you'll have the power to sign on behalf of the LLC at closing.You'll want to give them as much lead-time as possible on this.