Learn Basic information about the guitar, what things are called, the terminology used. Basic guitar melodies, chords and strumming patterns. Working towards any song you want to learn how to play! If you don't have anything in mind, I generally focus towards rock, pop and blues genres because this is the easiest to process as we are surrounded by these styles all the time. I usually spend one part of the lesson going over certain exercises that will help you to physically improve, another part I spend on chords, and another part I spend on playing guitar riffs/melodies. Once you have mastered these things I then move on to scales, more complex rhythms and soloing.