Since you're a beginner, you can go to the local music store and ask for a set of basic strings. It will suit you needs.
Change strings when you feel they are dirty, or start making noises. Depends on how much you play per day, but meaby 6 months to the next change..?
I change strings once in a month, but i play 4-6 hours / day.
// Really, dont worry about the strings
This post was edited by Rupsu on Aug 18 2010 03:06pm