The Federal Trade Commission watches trends in reports, they don't address single reports.

Learn the trade at your door step and max.

I don't feel there is one answer to this question as every property is different and what are your goals, how much time do you have to manage, what are your strengths when it comes to working the trades, people skills, etc as that will help drive towards your super power. 

My jack of all trades gets $25.

And everything is a trade between time and money.  

My top priority is having maximum flexibility with what I can invest in within my HSA, second priority is ease of use and convenience of the investing platform, third is minimizing any account, trading, or management fees charged by the HSA provider. 

By trade I have been in occupational therapy for 10 years, but am willing to take a pay cut to really focus on what will make me the most successful investor I can be.

I am planning two ADU's at two separate properties, I'll trade a large yard for additional income all day long.

Hard money lenders are often more willing to take on higher-risk projects and offer faster closings, but the trade-off can be higher interest rates and shorter terms.

The entire teachings had gone from Nickersons conservative but a cash flowing small residential property, hopefully for 10 -15% below market, do immediate repairs, then slowly over time improve the property and raise rents, either refi cash out or trade tax free for a larger property.