Help running numbers

[Jonathan Jackson]

Hey guys, I wanted to know is there any websites or ways I can practice running numbers on homes. I ask because right now I go online and just pick a home off zillo ect and then play with the bp tool calculators but it doesn't feel like I'm really running numbers because I may not have the purchase price, arv, ect. So if someone can assist me on how to look at homes and get the correct details I need to run my numbers to see if a property would make sense to purchase or just some ideas on getting myself familiar with this process.