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

Local restaurants and grocery stores? 

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.

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.

The common area language should dictate that personal items are not stored in common areas, it may also address maintenance of those areas, but you will need to amend it to address outdoor furniture and grills. 

The big box stores sell a kit for less than $20 bucks I think.Hope this helps.