How can you set an og alarm clock?

I bought an og alarm clock and I don't know have to set it :D if anyone could tell me how to set the clock AND stop the ring when it does ring, I would be very grateful. I have posted a link to a photo of it: http://www.bedbathandbeyond.com/product.asp?order_num=-1&SKU=14641246 this is exact same model as the one I have.