The first question about guitar lessons in your home is, “Do you have a guitar?” If so, you have taken care of the main concern. Also consider that guitar lessons in your home are usually more disruptive than guitar lessons anywhere else. They can be great, but keep some things in mind. Will you always be able to be at the house for the lesson time? Can you provide the necessary privacy for a good lesson experience? Would you enjoy having someone in your home an hour every week for months or years?  If privacy, noise, scheduling, and convenience are not issues for you, guitar lessons in your home may be perfect. Less travel and gas expense for you, and probably more comfort for your student are good perks.