The advice I am giving always to all my students is above all to study the music profoundly... music is like the ocean, and the instruments are little or bigger islands, very beautiful for the flowers and trees.
When one puts up a building one makes an elaborate scaffold to get everything into its proper place. But when one takes the scaffold down, the building must stand by itself with no trace of the means by which it was erected. That is how a musician should work.
When I began, the guitar was en-closed in a vicious circle. There were no composers writing for the guitar, be-cause there were no virtuoso guitarists.