You keep the stores as retail space or did you convert to apartments?

You should have a main account for each property and then most local banks will allow you to create sub-accounts where can store funds or separate them into those buckets as the rent comes in.

I am trying  to purchase a multifamily house , outside of the city where i live it wis about 150  miles from my location ,  how do i figure out the demographics of the area and also the medium income around the area where i am planning to purchase . do i need to look for any big stores/shopping malls or any govt offices around the area to see if the place would be ideal for purchasing the property for renting it .

That is indeed double taxation.If you owned a shoe store, for example, you would buy shoes wholesale, sell them retail, and pay taxes on your net income.

It took me about 6 years but I finally reached the point where all of my properties have this color scheme and I only need to store three cans of paint for touchup. 

I sell online coffee stores for those trying to extend their brand/business name or company.

I also like being able to store documents with them, that's very useful. 

If you're furnishing in Austin let me know, I have a spreadsheet of what I'd buy from the local furniture stores.

Again, the BiggerPockets store has some books for this or you can learn by watching podcasts, reading blogs, and interacting on the forum.

The same thing generally holds true for journals, blogs, podcasts, amazon FBA, Shopify stores, etc.In real estate, a rental property with a property manager is pretty passive.