Where do you find properties?

[Michael Guydish]

I have been researching a lot of properties but I want to know I am searching on the right spots. I have been primarily searching on Zillow. But to be able to type in the numbers into the Bigger Pockets Calculators I am left dry with info. Zillow does not show a lot of what the Calculators ask such as the expenses etc. I am wondering where you search and how you come up with the numbers for a property analysis to see if its a good investment? Where is a good place to find properties? And how do I find out accurate data to put into the calculators?