Nuts and saddles

So my nephew and nieces who lives in another country is doing well in school. Yes it's been three weeks since the start of school and they are still in cloud nine. They love school thankfully and now school activities are starting to pour in. My nephew is into guitar class and also the school band. He loves to learn guitar so this year he is into it. Now he told me he needs a graph tech and I do not have any idea what is it all about. He explained to me what it is and I get the grip of it, lol. I could tell his excitement over this guitar lesson and I am happy for him as well.