BP advertising rules don't allow them to reach out here.

Does anyone know of a site or common place to meet investors and rehabbers to make a deal with.

It is common for PMs to stick fees into paragraphs throughout the agreement, this is another red flag.

These properties are on the MLS most of the time. but to be fair, it is not required for you to buy their advertised properties.3.

Well said Jordan, it's not as common in this market to have an ADU but there are some out there.

However, these are the ones most commonly used:Five-of-Ten-Year Test: You must have materially participated in the activity for any five of the past ten years.500-Hour Test: You must have materially participated in the activity or activities for 500 hours in the current tax year.Step 3: Calculation your participation hoursEnsure you are tracking your participation hours.

Just simple common sense. 

Looking at pure spreadsheet math and common convention; if you pay down your mortgage you are effectively making that interest rate on your money. 

You asked about buying older properties and the biggest issues I have found is that roofs need to be replaced, HVAC needs servicing/replaced, and sometimes there are foundational issues (not super common). 

Quote from @Clarissa Finks: Software is a common question on BiggerPockets.