How do you replace classical guitar strings?

The bridge part of a classical guitar does not have pegs, it usually contains one hole, unlike a steel-string guitar. You first slide one string in one end of the hole, usually to the end of the hole that's facing the guitar Fretboard. Once the string is inserted loop it back around and then you have to tie a couple of loops on the bridge. Double-check to make sure the string is secure. Thereafter do the same thing and string it up on the tuning peg. If you are changing string for the first time, I would recommend looking at pictures and how-to videos.