This video below has the best explanation I've seen, even though the podcaster is still a fan boy.

Let’s say you’re starting from zero in 2025—no properties, no deals, just the knowledge and lessons you’ve picked from BiggerPockets, books you have read and videos you have watched.What would you do differently this time around?

I have not seen any "main stream" versions of this just back country engineering but it's a solid concept and works well. 

When you talk about replacing income, the safety of that cash flow is much more imperative, since presumably you are living on it, too.And then you combine both thoughts: safety in income stream to live off of, and cap rates/yields from assets.  

Video and/or take pictures of everything in case you have to pursue her in small claims.  

I do not wish to waste my time watching videos,searching the internet for how tos and what I should be doing.

Tell tenant you will review the maintenance history and the video.

Now isn’t the time perhaps but an internet video or two is free.

I have made 30 videos on how to do things and put them on a YouTube page for our tenants, sent it out on an announcement, etc.   

As far as the video.