Nothing is very new in real estate the laws were laid down years ago and pretty much the same.. couple concepts.. buy low sell high.rent for more than your all in costs.get a license and broker real estate for a career.get a mortgage license and help others get funding get an apprasiers license and get paid to evaluate properties and write reports.Work as a property manager and get paid to manage.ETc ETc For courses you may wish to take.. simply go to e bay and buy most every guru's courses for 25 to 50 bucks each go through the tapes and books you will find most of the information highly redundant because nothing is new there is only so many ways to skin the RE cat..

The questions you're attempting to address cross many financial disciplines.

I think you just need to buy your inventory then resell it.. or if you simply want to make middle man fee's get a license and go forth in that pursuit.

I simply meant to carefully find and vet good property managers in town.

He may simply be realizing that this guy is about to "fall" off the roof and then come after you and your house, kids college funds and retirements. 

I’ve had had great success with direct mail for single family so I am going to attempt a multi unit campaign.

My wife and I decided a few years ago that the "normal" life was not something that we wanted to live simply because we could.  

If the addendum is attempt to eliminate the appraisal contingency I would walk.   

you can have them sign a brand new lease agreement, but if you are only changing the rent or simply extending your original, it is unnecessary. all you truly need from a contract point of view is an addendum to original lease, which references the original.

If this is in fact the intention do I simply terminate the current lease and create a new one?