Brand new here! Need help using my Suunto dive computer

[karena]

Hi, Divers!
I bought everything used and it's been serviced but I don't know how to use my dive computer. I went diving with it yesterday and it seemed to log everything but when I am looking at it today, I don't seem to be able to bring anything up. It's a Suunto Companion Seauqest. Can anyone point me in the right direction?
K

 

[chrisdoc]

http://cabocanarias.com/images/stories/Aqualung/PDF Suunto/COMPANION_en.pdf