run an optical cable from your tv to the digital optical input on the receiver. I think it is on the left according to this image.
https://goo.gl/images/mkpzzn
run standard speaker cable to the apprpriate speaker according to your layout i.e. left right front and rear. make sure the correct settings are selected i.e. optical and you should be good to go as this is an entry level amplifier.
This article may help.
http://www.petervis.com/Amplifiers/sony-str-de485/sony-str-de485-back-sockets.html