The 22 yo graduates from college in computer science and says he is working on passive income this summer-wants to code something that earns passive income.

If that is the case you will need to hire a property manager who will likely charge 8-10% of the monthly rental income.

What the benefits for the seller are is that they CAN foreclose almost as easily as a bank if need be; there is a good chance that they can get a better rate on that Note that they will carry (say 5-10%) than what they are likely to get with their equity otherwise; if might help them sell a property that is hard to sell otherwise; and might be advantages income tax wise also.One example is a 4plex that just came online here in our market.

This strategy is great, but it fluctuates depending on the time of year, you probably won't live for free because it is more challenging since you are only Airbnbing a small space or basement unit.4) MTR - this is a good in between style of creative strategies since you can furnish a place nicely that would rent out on Airbnb but you want a long-term high quality tenant like a travel nurse or corporate rental that stay for 2-3 months vs. under 30 days for most Airbnbs.Combining strategies is the best way to go, ideally, you would find a property with a separate entrance or walkout basement, live upstairs in the one of the bedrooms, rent out the other upstairs rooms and STR/MTR/LTR the bottom unit.

A property bought for $100k that has $10k of "Net Operating Income (NOI)" with ZERO Mortgage has a Cash Flow of $10k annually.The SAME Property, if purchased with a Mortgage that also has an annual payment of $10k means that the cash flow is ZERO for the exact same property.How can you say that Cash Flow is a characteristic of the Property?

Looks like at least 24 major corporate headquarters there and lots of different industries (universities, government, Hospitals etc) I want to do a deep dive into Columbus but want to see what you all think about other Cities in Ohio like Cincinnati.

It depends on what your starting reserves are, but if you have enough for a down payment, I would look into DSCR loans for financing, as you can qualify based on the property's cash flow as opposed to your own personal income. 

Can I claim the losses as active against W2 income?

My only concern is:  do you think its sort of pierces the corporate  veil though?

However, I will still be required to pay income tax on the income generated from my private lending activities.