Playing guitar scales into the 2nd octave, such as C Major, can add a bit of a challenge. You really need to watch the B string as everything shifts a bit. Also some scales will require you to move up the fretboard on the E string to get the full 2 octaves. Use this lesson to start moving up the guitar neck and get some practice playing to a metronome or backing track found at https://7minutemusic.com/scale/level-2/open-c-2-octave-ascending/. You will notice that the C major is a really happy sort of scale. Its also the reference for all other scales really as it has no sharps or flats. This is basically the white keys on the piano.It will become a common practice to play scales ascending and descending in future lessons so have a go at it here too - https://7minutemusic.com/scale/level-2/open-am-ascending-and-descending/.