Advice please re Which Media to use in GSA 2166D Lightscribe

We have just bought the GSA 2166D Lightscribe and would appreciate some advice on which media to use . I have read LOADS and now my brain is all scrambled…

I am looking to do backups of my data mainly Word Documents downloaded applications, Photos, Atwork , Digital Photo Manipulation software Painsthop pro etc

I look forward to your reply

Kind Regards