Because I want to get as much of my capital into a tax free earnings bucket as I can and for me, that's real estate.  

Having been in the lending space for a while now,  Interest income is not passive - its considered/taxed as ordinary income- just like interest you receive from your bank and savings account.Regarding profit and expenses from a flip, "that depends" on many factors but again if its short term capital gains, its not tax friendly.As always consult with your tax advisor / CPA. 

Can I by way of my experience, knowledge, and capital attract OPM2.

When you say a man in debt is a slave, are you referring to debt used for personal items, or are you including debt used to acquire income producing or capital appreciating assets also?  

Is there a lender/ lender type anyone recommendeds.Contrary to the mis information provided above, I know of no legitimate institutional lender that will lend money in a situation where the borrower has no capital of his own invested, at least since 2008!

There’s a major advantage here, especially for the seller, as it can help them defer capital gains taxes.

Simply put, the smaller the variance between the basis and the sales price of an asset, the less capital gains taxes are due from the sale.

For example, you may buy a property today and budget money for capital expenses each month for the next 5 years until finally you need to replace the HVAC.

So I know with the BRRRR strategy you start off with either your own capital or borrowed capital until you can refinance.

How will the capital gains and rental income be taxed (not just by US, but by Canada as well)?