I'm not sure who you are responding to - but just in case:
To learn how to visualize the fretboard - here's one possible method:
1) Find and memorize every location for every "C" note on the fretboard - practice this several times a day (every hour if possible) for several days - trying to see each note location in terms of the string and fret locations (it helps to visualize the fret markers as well)
2) Repeat the above for both the "C" and "G" note locations - practice this several times a day (every hour if possible) for several days. Really push yourself to visualize what the note locations look like. Project the written note name on to each of the locations.
3) Repeat the above for both the "C", "E" and "G" note locations - practice this several times a day (every hour if possible) for several days. Really push yourself to visualize what the note locations look like. Project the written note name on to each of the locations.
4) Try to find all the different ways you can play those notes in order to create various fingerings for 2-octave arpeggios (there are at least 11 possible 2-octave fingerings). Concentrate on the note names and locations rather than the shapes. If you focus on the notes - you'll learn the shapes anyway. But if you focus on the shapes, you may not learn the notes. Practice this - yup - several times a day (every hour if possible) for several days. Really push yourself to visualize what the note locations look like. Project the written note name on to each of the locations. It gets easier with practice.
5) Repeat the same for the notes of the F major triad. Don't forget to repeat and review the C major triad. Each new chord gets added to the list but no chord ever falls off the list of what to practice.
6) Repeat the same for the notes of the G major triad. Don't forget to repeat and review the C major and F major triads. Each new chord gets added to the list but no chord ever falls off the list of what to practice.
7) Repeat the same for the A minor, D minor and E minor triads.
8) Repeat the same for the B diminished triad.
9) come up with your own exercises to test your ability to "see" and "hear" these arps with or without a guitar in your hands.
x) Repeat for every key. Learn to practice arpeggios, fingerings and scales without a guitar - all the time learning to "see" more and more of the fretboard and more deeply into the freeboard
xx) It's better to learn one of these chords really well, then to learn lots of them poorly. Take your time and do it right. You'll never regret having learning these things - and you'll use this information every time you pickup a guitar.