A handyman/DIY landlord's natural entry point into the business is low C-class property that we turn into solidly respectable C-class. 

Not sure the nature of this, but do you really want this person to remain as a tenant? 

I'm not sure how others do it, but I think this is the method I will try. 

Does the BRRR method work for primary residents or for only rentals, is this a smart idea to use a hardmoney lender to get the property?

@Remberto Teos The goal of the BRRRR method is to pull out most of your capital at the end so that you can recycle it.

My father-in-law is the owner and wants the rents raised, but is leaving the amount and method up to me. 

I'm starting to get into wholesaling but I am having a hard time actually securing buyers so I'm looking for better methods.

I am starting to gather and understand the brrrr method and I listen to podcasts and videos all day everyday to learn more but they always lack some finer details only someone with more local experience could give....

My friend broke his leg shortly after closing on a primary residence so had to go live with his parents for better part of the year while he recover since his property had a flight of stairs and that he needed help due to the nature of injury.

The cement-board method of laying tile is far easier than any former tile-laying method to compromise with a shoddy installation.So my wife and I do our installations ourselves, and we end up with a vastly superior and tough product that we're quite happy about.