Ok, if it's like a strat, turn your guitar over. There are 4 screws holding a plastic plate on. Take them out. You'll see like a dull silver space that has 6 holes in it. Feed the string, not the ball end, the other end through it and it will come out of the other side. Now, take the string and feed it through the tuning post. Turn the peg until it starts getting tighter. There ya go! Make sure to stretch the strings out, like bend them before you tune it.