Biggerpockets probably not the place to find someone to buy a note against a business as most of us are only real estate. 

2. how to know where to find a B,C,D areas\neighborhoods in cities\ countries.3. how do I know if a property is worth the checking\ buying?

This is like buying any other property, it is valued at whatever the market is.  

Investment Info:Single-family residence buy & hold investment.

(or if they're primary buyers, they don't care about yield, since they're going to live there.)i just went to visit two very distressed properties yesterday that i would buy.... if they were priced 50% lower.  

I see a lot of investors buy good investments, but then they lose tens of thousands because they have no idea how to manage.

Are you agent yourself and what makes you say that you'll avoid buying a home under 1000 sqaure feet again? 

.: As a contractor and flipper, I dont buy materials from retailers or online.

Consequently,  there's rarely enough of a deviation in price between these auctions and what you can buy on the MLS/elsewhere with full diligence capabilities to make these transactions worthwhile. 

Again, I do not want buying the multi-family home to block me from accessing lending for the second home when I move.- Does anyone see any flaws or can offer some improvements/considerations to the financing strategy of this plan?