Using this Fender lunchbox is easy. First, open the lunchbox and place your guitar accessories inside. The included string winder can be used to quickly change your guitar strings. Simply insert the string end into the winder and turn it to wind the string around the tuning peg. The medium shell picks are great for strumming and picking your guitar. The FT - 1 Pro clip - on guitar tuner can be clipped onto the headstock of your guitar to keep it in tune. When it comes to maintenance, keep the lunchbox in a dry place to prevent the strings from rusting. Wipe the lunchbox with a soft cloth regularly to keep it clean. Also, be careful not to drop the lunchbox as it might damage the accessories inside.