1 property won't get you very far, the only way to potentially make some respectable supplemental income from just 1 property is the STR route and that basically has to be a home run. 

One option is to run the main unit to a more comfortable level and let the others supplement their space with a heater connected to a kill-a-watt outlet meter. 

He also gives a ton of supplemental materials.However my process goes like this; post ad on facebook marketplace, zillow, apartments.com, etc; screen tenants with questions based off my rental criteria, determine if they will likely pass and set up showings, have them complete app and background checks in apartments.com, and choose the best candidate based on my criteria.

Thus could be a good job for a family member who needs supplemental income.

I then primarily used 0% credit cards, occasionally supplemented with small personal loans from family. 

We did the garlic festival there and the Garlic Ice Cream was AMAZING). 

This also includes supplemental financing (different from a refinance but similar in concept).

I would focus on the liability side of insurance and you may even get supplemental umbrella insurance to safeguard your liability. - Yes, you should do your own background verification of the Tenant, do no rely on ANY background verification, credit reports, etc. provided to you by the Tenant directly or a background verification conducted by another company with no connection to you - different companies focus on different things when conducting verifications - you will be focused on qualifying this person for housing not a new job, which is completely different. - For furniture/other items: Make an inventory list and have the Tenant sign it before moving in.- Yes, you should include all these items in the Lease; You should not accept anything less than a one (1) month deposit, it is your security.

Supplement that with rental income from properties as is, which is about 24K a year cash flow.OR....

I prefer to work for myself, so my primary income source is a small business that I own, and to supplement that I have a W2 job part time.