There was a recent podcast of how the interviewee called 4,XXX times before he made his first deal, a decade later he now owns over 1,400 units.

I usually do a search for "XXX county tax lien auction" or something like that.

I have seen a lot of XLS that at 50% rental you are $xxx profitable.  

Any kind of guaranteed commission (E.g. you won't make less than "x,xxx")? 

It's I outlay $2,000, get in $1,700 to offset it, and I create $XXX in equity every month.

Landlord Tenant law.If I was in your position, once you have a fair idea of what the law says, I'd send your landlord a written statement of what you expect him to do, (pay you $XXX for your damages due to bug bites, return all $XXX taken deducted for non-existent pet, return all $XXX taken for early departure, etc.). 

We will call it "XXX Company" for example.

Do I reach out to the attorney for the bank and say "I'm interested in this property at $xxx" if you want to take it off the sheriff's sale... ?

I can't tell you how many times I've had to fight the battle of "Zillow says my house is worth $XXX,XXX. 

It obviously varies state to state, but my brother who is a realtor says that he videos the inside of a house before hiring the dumpster because where he lives if the stuff left behind is over $600 you have to store it for xxx days etc.