Good teachers are gold, but you don't have to learn from a teacher, it is possible to teach yourself.
I recommend just starting with the major scale: play the hell out of that, play it in each position, play it in every key, play it and think about the scale degrees as you do so (eg. first, second, third, etc.). Eventually you'll get that down to the point where you can start using the major scale to build chords, and then you've got a world of arpeggios to practice up and down the neck, and you only need a few simple pieces of information to start: what constitutes a major scale, and what makes up a chord. There's a huge amount of meat on them bones, believe me.