Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

I was going to get them to sign a land contract outlining the terms, so me being authorized to make the payments of the current mortgage, allowing me to renovate the property, and allowing me to sell the property on the MLS once it's renovated.

Signs?

Write in the lease and be clear on signing what the boundaries of the property are. 

Quote from @Roger D Jones: This is terrible and not legal in any way but it was pre Covid and the rules were a little less restrictive. 

I’ve signed up for several “mentorship” programs all right around the $10K price.

@Andrew ThomasSorry you I was shift my focus from purchasing my personal residence to purchasing my first investment property as a realtor you should have access to a program called realist you can easily go in there and search for out-of-state or out of County owners one of the best ways to Market is handwritten envelopes it is almost a guaranteed open versus any other kind of marketing realist has so much information how long people have owned the property with their mortgages Etc I would also try to find as many wholesalers as possible and sign up for their list and look at how they are packaging their properties you will need to go and join some investment clubs a national Club you could potentially join is called Lifestyles Unlimited I'm sure the information they teach is also available on Bigger Pockets at the end of the day if you have a great deal you will always be able to find an investor for it

The first sign that a roof is failing is when it leaks.

@Aaron Francl i dont sign here too much!!

Is it even possible to do or would they have to sign a whole new document?