#1
i realy dont know how to put them on i know how to put on steal strings not nylon strings there probly realy easy to change i just dont get it
#2
TS, you're right, they aren't really all that hard to change out. You just need to learn how to do it is all.

Here's a walkthrough for you showing you all of the steps needed to change out nylon strings, with pics and descriptions of each step. Just take your time and be patient the first time around and you'll do just fine.

http://www.frets.com/FRETSPages/Musician/Guitar/Setup/Classical/ClassicStr/classicstr1.html