Building plans are 'instruments of service' not products.

I have been receiving everything from hate mail to bogus entries two products purchased online.

Two of the books that have helped me when I was in your position are Start with Strategy - https://store.biggerpockets.com/products/start-with-strategyThe Book on Estimating Rehab costs - https://store.biggerpockets.com/products/the-book-on-estimat...Since you like the podcasts - these are available as audio books and broken into audio chapters so you can listen just like podcasts!

I'd like to start with flushing every few years and replacing the anode rod every 5 years or just once with one of these powered rods.I am skeptical of the very positive product reviews since the review really needs to be submitted 10+ years after the installation to be meaningful and they never are.

The numbers just dont line up yet.

We usually bill our owner's via cash rather than accrual (IE our July owners statement for an owner has their July revenue minus expenses paid in July) but the owners get confused when the cleans don't line up to the stays, so had to train our bookkeeper to include the July cleans on the July statement even though that invoice was paid in August, which is different than how all the non-cleaner invoices are handled.

He built an amazing product and was selling to recapitalize and use the funds for his on going projects. 

Business credit allows a company to borrow money that can be used to purchase products or services.

I did check up on DLP ( goggle search)  because this peaked my interest .. they have large Internet presence.. they are a brick and mortar RE brokerage with about 30 agents then they also have a Hard money company.. and it looks like they just decided to add this JV product to their menu...

I do like Ring as well, but to my knowledge their product line is fairly limited compared to other whole home security systems.