Definitely online via property management software!

Personally, if your market tends toward the former condition (better/normal appreciation) I think it's a fairly safe deal looking at the long term, assuming infrastructure around you continues to support the idea of renting it.

I'm reaching out to other plumbers to be safe, but are those supplies mine to use now for the next plumber?

I think I've talked to maybe 2 tenants on the phone so far, and I didn't mind because there's a lot of scams online.

No off-street parking = not worth doing MTR unless it meets all of the following: super urban area where no parking is the norm, highly desirable area with a ton of MTR demand, super safe part of the city, and has great public transportation (think NYC, Hoboken NJ, etc.)Unless it meets all of the criteria above, I pass on those opportunities because my MTR will be eliminating the many people that travel with their vehicles.

One tip is to start looking into meetups to connect with investors / others in the REI game (in person/online).

Kodak was a industry "beast", a definitive "safe" investment, until it wasn't, and it went to trash in a flash.   

I can't post the link here, you can dm me or search online. 

If they are available online or in person.

There's also free services for tenants to pay their rent online which include some light accounting features.