They have a form you can fill out and submit, might be able to do it online depending on the city.  

We looker at few houses/Condo under $200k-$250k and saw few online in that range.

is there a way for me to create an online STR guestbook for free? 

I didn't invent this, it's the metrics of online media today. 

I also looked at hundreds of deals online and visited over a dozen properties before I landed on this 8 unit.

The number of people who have called many of us saying they saw some article online or watched some tickytok video and did something COMPELTELY wrong is staggering.  

I'm not sure if we can like to articles on our own websites here, so to be safe I'll just suggest the IRS web page, which does do a pretty good job of explaining the basics: https://www.irs.gov/taxtopics/tc510The main thing to know if you're going to claim business miles is that you do need to keep a log of every business trip. 

You can also check their reviews online at Google, Facebook, or Yelp.

I've seen a lot of bad excel templates online...

Now when your agent actually does the release then they send it to the listing agent and its is the listing agents responsibility to forward that doc to the sellers we do this all the time via docu sign or hello sign or whatever on line document system the local MLS uses.. somehow you seem to have this backwards..