Dispositif multimédia de découverte de "La Vierge au lapin" du Titien (musée du Louvre) by Dalbera. Attribution 2.0 Generic (CC BY 2.0)

Bob Bly, an author with over 60 books to his name, notes that most people learn by reading, watching, listening, or by participating. What he means is that regardless the content, people learn things better when the information is presented in different contexts. Similarly, Howard Gardner, the Harvard psychologist responsible for developing the theory of multiple intelligences, has suggested that a minimum of eight modalities for learning exist. In a nutshell, Garder's research has led him to believe that we all have at least one of these intelligences, and that we rely upon it for learning. Regardless, the two examples suggest that there are many different ways to learn. I can reasonably conclude that here is not a set way we can present information, not should there be.

I know this will sound like balderdash, even heretical, but being good at guitar really doesn't matter.

Let me say that again: being good at guitar doesn't really matter.

What matters, what truly matters actually, is how well you can use it. When you use a guitar, you treat it as a tool that can help you build something. What you build could be the ability to play a favorite song. What you could build is the ability to play in a band with likeminded people. What you could build is your own song.