Don't go off the Zestimate, scroll through listings that fit your parameters of property (size, beds, quality, location, etc.). 

As you scroll through fackbook or other sites you see various life hacks about cooking, landscaping, etc.

These are handy to find some of the numbers you need:This one will give you average rents and vacancy rates (scroll down to see vacancy rates after you choose a metro area:https://www.deptofnumbers.com/rent/Property tax calculator: https://smartasset.com/taxes/property-taxesI am a doubting Thomas. 

If so, try doing your calculations in Utah without a manager.I have been using this calculator to figure out cash flow:https://www.calculator.net/rental-property-calculator.htmlTo fill in some of the blanks I use this website for rent vacancy rates (scroll down the page):https://www.deptofnumbers.com/rent/For property tax rates, I can usually just Google it.This website is interesting to compare livability between different cities:https://www.areavibes.com/But, really, I think it's best to buy in an area you know, if possible, and close enough to self-manage as easily as possible. 

They have this "1-click inquiry" feature that people use without bothering to scroll down and read the ad.  

But, if you screen well in the first place, you shouldn't have to worry about it.Here are a few calculators I use to look at properties right now:Rental NOI:https://www.calculator.net/rental-property-calculator.htmlProperty tax calculatorhttps://smartasset.com/taxes/property-taxesResidential Rent Vacancy Rates (scroll down):https://www.deptofnumbers.com/rent/

(scroll down to see vacancy rate below rent amounts after clicking on the metro you want):  https://www.deptofnumbers.com/rent/

 I like the Nolo books, if you don't want to scroll through a ton of threads on BP:https://store.nolo.com/products/landlord-tenant/landlord-books

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