Thanks for your help everyone :-)
What a warm welcome to the forum. I'll write about myself on the 'welcome' page, but long story short, I'd love to become a music/guitar teacher myself. I've been playing for 6 years, I'm 26 and have always thought about it, but have really started to seriously look at my playing and knowledge in the last 6 months. If I can get there by 30 I'll be a happy man!
Given that I want to be a teacher, I think I need to take a methodical approach - stick to a few things at a time; master them and move on, becoming back to them for a refresher when I can.
Up until recently I've always been a 'feel' player - my techniques have been okay but not where I'd like them to be, and since starting my practice schedules and working hard, I've seen good results so far.