Guitar strings tend to wear out over time. They lose their tone, lose their feel, become harder to keep in tune, and break more easily, so it's important to change out your strings if you want to keep sounding your best. Knowing how to change guitar strings is a vital part of being a guitarist. It really isn't a difficult task, but can be intimidating for new guitar players. With a little bit of practice and experience, though, you'll be replacing strings like a pro.
Tips: I strongly suggest that you change your strings at least every six months. For those who practice for hours every day, you may even need to change your strings every two months or so.
Step 1: Materials
New guitar strings (of course)
Pliers (needle-nose preferable)
Very soft and clean cloth (polishing cloth preferable)
String winder (I don't use one, but many people use them and they can speed up the replacement process)