This is how to fold:
http://www.fixya.com/support/t1444342-folding_peg_perego_tender

Maybe go in reverse order to unfold?

I need help! Someone just gave me their old one, I estimate it to be about 8 years old. It is in the folded position, it was dropped off at my house when I wasn't there, and I have no clue how to open it! It is essentially a 30 pound paperweight until I do. I've googled and emailed the company, but I cannot locate instructions or an owner's manual. Can anyone help a girl out here?