I try and encourage those who are interested to learn to play classical, with your fingers, to sight read, and practice at least an hour a day if you can't make it two.

There are certain scale patterns you can play on the neck using ami fingering on the right hand and certain arpeggio styles and "clawing" techniques that will take you to a whole different stratosphere--and faster.

Classical. Even if you play rock.

FWIW and YMMV.