I do not wish to keep the current tenants and was hoping to learn the best way to handle the situation and give them proper notice.

Other options I would consider is renting each individual rooms (this generally increase the monthly cash flow vs renting to a single person).

I wanted to connect with people to discuss lessons learned and how I can go about navigating the permit process with zoning/planning and the building department. 

And there is no function at all to import transactions from my property management companies, so I need to keep a separate set of books for things I pay and then have my accountant manually reconcile my books with the property management statements at tax time.Fourth, it's incredibly complicated and hard to learn, but the customer support is very limited and rarely helpful.

I own an investment condo, my expenses went up and my tenant just left, and I'm considering selling it with seller financing but want to learn a lot more about it.

The "Subto community" is NOT a good source for learning how to solve the Due on Sale clause.

This gets complicated with two sets of participation rules for limited partners and individual taxpayers.

@Noah Condon I would suggest you learn about hard money financing, unless you have unlimited cash. 

Go to local Real Estate meetups and learn from people there

This kind of garbage tactic can be learned on other platforms.