Can I get cydia for iPhone ipad ipad mini, ipad 2?

Ok so I went to the link hackcrack.com and I went to openappmkt, I downloaded cydia, it won't work.

Please help I need to know what to do, it freezes up on the info for the twitter information, the man who created it is name saurick.

You get Cydia via a jailbreak, not a download from a website. Its saurik btw.

As far as jailbreaking the devices check http://iclarified.com/jailbreak