How do you really buy foreclosures?

[Justin W.]

I see listings on Trulia etc for my area that are listed as in foreclosure. I've tried even to sign up for 30 day trials of the foreclosure websites. How do you really buy a foreclosure and get info on them etc? I've searched the forums and didn't see anything specific on this. If there is existing articles, etc. from bigger pockets a nudge in that direction would be appreciated.