Zillow.com pre foreclosure

[Marc J Brooks]

I could use some advice on zillow.com. I was suggested use this word pre foreclosures on the trustees give me the owner's name? Info? Also how does Zillow comps anywhere close to what they should be? And what information would you guys use together to make an offer? Below is an example of a house I'm looking at on Zillow. Forgive me and brand new 2 real estate and just want to get started

Check out this 3 bds • 2.0 ba • 1,724 sqft home at 2923 SE 17th St that I found on Zillow: http://u.zillow.com/p3dtwI

Thanks 

Marc