https://www.biggerpockets.com/filesI have uploaded my own spreadsheet file to my BP Fileplace which has an analyzer and estimator tool if you want to check it out:https://www.biggerpockets.com/files/user/drobertson/file/house-flipping-spreadsheet-6-lite

I heard they have 2 million users inside the platform and most of them are investors. 

Yardi Breeze is a really inexpensive software that is user friendly. 

That could be too risky for your first deal.Next, search the internet for 0% interest credit cards.  

I think the major issue these days is these are  transactions for those with money and experience but with the internet and the Pace Morby's of the world you are going to see a lot of folks with no where near the experience or ability to handle these get into these deals and the train wrecks that will ensue..

Guesty seems to steer users toward the upgraded connection but I wonder if the standard results in less issues...does anyone out there have experience using both? 

You market the service across the Internet; nearly every time you post there's a reference to try to generate interest.

You could create user profiles with an enum field called type or occupation that would allow people to search for other users with a specific job in a specific area.  

Quote from @Aimée Hennessy: Asking strangers on the internet to partner with you is pretty risky.

You can use rent to offset that debt right away.