In other words, FB marketplace cast offs won't be the best fit unless you're lucky enough to come by some Pottery Barn or West Elm or brands like that. 

I plan on mailing the letter certified and I wanted to know do landlords also call the tenant as a courtesy to let them know about the letter. 

This is a tool that is supposed to achieve a competitive advantage in the marketplace, which will allow you to outperform the competition.Thus, if you are OK with me being nice, I'll repeat myself and tell the newbie OP that I think your tool is fine to use and learn from.

Meetup.com is a good resource for those but some of the groups will also post here on Bigger Pockets Marketplace too.

Perform this research by using the rent comp tool on BiggerPockets as well as FB marketplace, Zillow, Craigslist, etc Also for those 15% of units that are “at market”.

An 8% protected preferred return or a 10-12% target return. 3) Our passive note platform (Swell.investments) has yield from 8-20%. these are loans we have already originated and are available right now and we are happy to keep vs. matchmaking or crowdfunding where you only get to invest if the marketplace collects enough investor dollars or the matchmaker has a deal ready to fund (what you call whole trust deed investing).

Just go on Craigslist, OfferUP and FB marketplace.

I would think that a notice with the addresses and legals of the two properties, including index numbers and such, attaching a certified copy of the name change order to each notice, should be sufficient if recorded against each property. 

Hi guysI have a handyman who is super knowledgeable and he is very comfortable connecting the 220 wires for a mini split and also for a hot tub. im getting extremely high quotes for a certified electrician to do it. what are your thoughts?

While to some extent software can act appropriately based on averages, that'd different than actually understanding the marketplace and workflows and optimizing.