One word of caution - highly recommend checking out who is servicing the note currently - if it is owner servicing it the note is typically not as valuable.Some sites that do sell are fciexchange, paperstac, madison management, watermark exchange, loanmls to name a few of you looked at online portals

He has a ton of free content online (videos/podcasts).There are others out there such as Eddie speed out of Texas and Martin Saenz who is local (NOVA).

Any suggestions for where to go for a primer, either online or books? 

I looked into @Brandon Hall but it seemed that the options provided online were for investors who were more established.

It's a gap in the market, and I'll bet you'd offer a tonne of value!

the best way to do this is to have lawyer write it up. the second best way is to purchase on online (BP sells state specific leases, prepared by attorneys) and you can always make some modifications to it...but the most important part is to run the purchased lease by a local real estate attorney to make sure it and any additions comply with state law

He is a frequent contributor to this forum, and you can check out his company, Sense Financial, online.

Is there an oversupply or just that the supply is there to meet the growing demand. 2) Between the two school district which is a better bet - Frenship or Cooper?

If I give a free month as incentive I am guaranteed the lose of $3500, if I take the gamble and not collect the deposit, I’m hedging my bet that the tenant wont trash the place, and therefore less likely to lose $3500 bucks. 

Based on what I have found online it seems like deposits in the state of Oklahoma are typically deposited into an escrow account that may or may not be interest bearing.