How do i evaluate a house price?

[Reynaldo Tello]

Hi everyone so as I keep thinking about starting real estate this question came up. If I'm driving for dollars and I see a vacant house,how can i tell how much is worth,how do i find how many rooms and sqfeet.it has and what repairs need to be done if i cant go in the house?I dont even know how i can do comps like that and i dont have access to the mls?would the county records have all that info about a random house that i just happened to drive by?thank you guys sorry if this is a long question but I just need a lot of help.