For example, I am managing his investment right now all for free, I let him to borrow my car and store all his tools in my home, so our relationship is very close.

Invested $40,000 with the online store.   

Credit cards - store specific, general business expenses, etc.Any POV you have on what has worked for you would be great!

You should have earned above-average income these last 20 years, but you tell people you run a second-hand store?

Buy modern fixtures to make the place as fresh as possible without spending too much money.

Sometimes a fresh perspective and the right contacts can turn things around.Don't let the traditional lending approach get you down.

I have a property in Kansas City that has been freshly renovated.

Watch the local newspaper, browse local and state government websites, and keep websites like the HUD Home Store bookmarked, which will alert you to up-and-coming properties.Attend local eventsLocal events such as community gatherings, property auctions, or real estate investment meetups are excellent places to discover off-market deals.

Read a couple of books first, so you have a fresh start with some of the basics before you go.   

Pick up a receptacle tester—available from most retail stores for less than $10.