This leads me down a rabbit hole:This is likely a very old house.It likely has some deflection in the floors (so you are never going to fill gaps and have the filler stay)Wood joints aren't true any longer due to shrinking of a 100+ year old materialYou have a number of different patches if looking across all of the pictuers.So, the last thing I would do is refinish this floor with a natural/stain finish.If it was a section 8 grade rental or similar, I would do a sand, vacuum, and paint with a flooring paint a brown.

You will need to develop that look if to doesn't come naturally. 

@Luke H.There have been multiple well thought out responses albeit of a vague and generalized nature based on the limited initial information provided.

As a noob, I naturally feel comfortable investing in the area I currently live (Tacoma, Washington) simply because I live here and can build a good network and team - but I am not opposed to expanding my search further!  

It's the nature of wholesaling.

The typically volatile energy category rose 0.8% in September, led higher by a 4.2% increase in natural gas prices, while food prices were unchanged.

If you're publishing it publicly on YouTube or something of that nature typically you do need the seller's permission.

If you are naturally inclined to sell then you will do well!

I had suggested to her and naturally her response was “I have nowhere else to go”.

COVID is an unexpected natural disaster and just be thankful you have the option to defer.According to rules around forbearance, you were required to notify all your tenants in writing you are in forbearance.