I've been playing guitar - after a fashion - for well over 30 years now, but I learned almost everything I know in the first 6 or 7 years. Never got even close to being any good at it, and I've spent the time since then well and truly in a rut (I've dragged myself out, briefly, a couple of times, but soon fell back in again....)
My initial knowledge was gathered from books like Lead Guitar by Harvey Vinson (first published in 1972, I believe) and The Heavy Guitar Bible, then later I dabbled a bit with tuition videos, then DVDs. Many years after that, I made a half-hearted effort to learn a thing or two from Line 6's online resources. And I actually had lessons for a few months. None of them ultimately led me to that breakthrough of being..... competent.
I've often thought of starting again from scratch, trying to forget the pitifully small amount I have learned and going right back to basics. But what's the best way to do it?
Suppose you were starting again, but armed with the knowledge you've acquired over the years. Did you learn stuff that was a complete waste of time? Did you learn useful stuff, but in a hopelessly inefficient manner? Are there tuition aids/methods you found particularly useful (or completely useless)? Is there stuff you know now but wish you'd learned much earlier? Did those 12 hour sessions practicing sweep-picking to a metronome ultimately serve any purpose....?
In short, what do you think's the best way to learn guitar?