Tons of hours of YouTube and reading forums online and hours of applied work on my own properties.

But since you keep mentioning the issue with Boeing, I will note that the Youtube video I posted is not a media article, it consists of clips of the footage of the US Senate hearing, where US Senators asked questions and Boeing CEO "answered" them (I added quotation marks, because he had no answers for most of the questions, including why Boeing sent US Senate papers with gibberish all over them instead of the production documents that they were required to). 

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

I would absorb as much info as possible from YouTube.

For whatever it is worth, we rent our STR by the month during the non-tourist season and we have a walk-through video on YouTube.

If they stay more than five days, I recommend treating it somewhere during their stay.There are a lot of guides on youtube or Google specific to short-term rentals.

Check out Erin Spradlin on YouTube 

I have watched some Youtubes and most operators say 3-4 bedrooms and 2 baths are ideal.

Pro photos= yesDrone photos and video = yesVertical video = yeshorizontal video = only if you have a direct booking website and/or YouTube. 

If you haven’t already, I would check out Sean Terry’s YouTube video with Bob Diamond on wholesaling apartments.