Local restaurants and grocery stores? 

If 1 person gets 2 letters, one sends them to their professional and credible website, that shows how many reviews they have, happy clients, shows how awesome they flip the houses, has 3 blogs is involved with the community and has a tremendous web presence... and the other... nothing...if it were you, which card would you call?

I also suggest that the tenant install a camera that stores videos of the driveway, then when tenant has proof, you can send notice to owner next door that he is to eliminate hazards he is creating, or you will sue for damages, especially if it costs you tenants, as they can’t afford and shouldn’t have to deal with repeated damage.

I'm considering doing the work myself getting a helper from a paint store or something

:-) I have always just done American Craftsman (Home Depot) or ThermaStar (Lowe's) depending on which store is closing to my job, but truth be told I would think I could find something at a more contractor/landlord friendly price but haven't done well in locating someone yet.

Again, the BiggerPockets store has some books for this or you can learn by watching podcasts, reading blogs, and interacting on the forum.

As in how many followers you have on your YouTube channel or how many page hits you get on your web page.  

He teared up when I gave him the keys to the store.

They were owners of warehouses that stored hundreds of pallets of goods sold to other businesses.

Ideally would have iphone and web access to account.Would appreciate pointers both positive and negative.Many thanks.