Do you have any books or resources out there that he can dive into to help him hopefully avoids some of the common pitfalls?

The common thought is to not rent to friends or family.

Beyond legal requirements, I’d love to hear about any practical advice for managing properties, finding good tenants, and avoiding common pitfalls.

Another common practice for nationally sparse datasets such as tax data is aggregation.

Also use a infrared thermometer to find the cold walls and insulate accordingly. 

If you are new to the business the most common issue is you're either locking up deals too high or you aren't finding attractive deals.

Common sources of such properties include:Foreclosures: Homes that have been repossessed by banks due to non-payment.Distressed Properties: Homes that are in poor condition and need a lot of work.Auctions: Properties sold at auction for below market value.Off-market Deals: Properties that aren't listed on the MLS but are available for sale through direct outreach or networking.The key is to buy a property at a price low enough to ensure that even after renovations, the home will appraise for a higher value.2.

While turnkey properties are more commonly used for DSCR loans due to their immediate cash flow, fixer-upper properties can still qualify depending on a few factors. 

There are a couple of others less commonly used. 

Today, it is 24 degrees and wind chill, and it tends to be colder in the park and cold mist freezes certain areas of it to the point that they're closed for the season as well.