Changing strings is actually quite simple. It´ll be good for one to learn to do it, rather than spend money unneccessarily.
One thing to note is the winding of the string ends at the pegs. It´s important to keep the strings neatly stacked. In other words, strings should not cross over itself on the peg. This helps to keep the strings in tune.
After passing thru the slot, wind the first half round beneath the open end of the string, then the next round, wind it on top. Thereafter, continue to wind the rest of the string beneath. This should be the only place where the string will cross over itself!
Personally, I dun like the idea of bending the string back onto itself, as illustrated at the above website. Bending strings at sharp angles, like the case above, will cause more breakages.
Also, try not to wind too little or too much. Too little and the strings won´t stay in tune. Winding too much will force the strings to cross over each other when space runs out. This crossing over will cause the strings to ´jump´ out of tune when the tension builds up. And it´s ugly, too.
Lastly, expect to tune a few times before the strings stay in tune. The strings need to be stretched before they will stay in tune. You can stretch the strings by pulling the strings LIGHTLY with your finger, pulling at intervals from the bridge all the way to nut, to ensure even stretching.
Just my 2 cents worth!
<font size=-1>[ Edited by live33 On Date _MONTHDATETIME ]</font>