Actually, I was just checking my computer because I thought I'd given Terry the wrong reference. Which I sort of have. The e-book I was thinking of was actually 'The guitarist's music theory book' by Peter Vogl, specifically Section 5 -The relationship between chords and scales. It has audio files built in too.
The only reason I suggest these, is that people learn differently. I find I learn from a combination of listening to explanations, seeing it demonstrated, reading and doing. So for me watching the Acoustic Genius Series, reading the books, playing and hearing/reading other peoples observations all work together to progress my understanding.
Dermot,
I think doing the exercises that Nessa and Neil suggested and keeping it a bit simpler is a great idea. I suspect you'll feel like you've progressed more if you keep your goals simple and don't try to achieve too much all at once (Neil and Nessa have got a lot of years of playing experience between them).
Don't despair. Just play more (most people would benefit from that) and listen to and try to apply the advice you've received. If you've done that and you still don't get it then ask again being specific about the bits you don't get.
I find that I get part way through a book and then my eyes glaze over and I get distracted because it's too much to absorb all at once. But, I find that if I return to the books occasionally then I'm generally ready to adsorb more and connect the bits I know better. The added understanding generally comes from working on more songs and listening to Neil and others also explaining things too.
Yes, I've got some good iPad apps too. But, that's another subject for another thread, which I may start one day.
So play more and keep going back to dip your head in the books a bit at a time.
Now I'm off to play and apply, first off pulsing barres (roots, 4ths, 5ths and 6ths - Neil's advice from the news AND the Jason Mraz FOTW).
Ciao for now buddy.
OH BTW - there's a spot in the Busking 'Something' thread with your name on it. Why don't you work on something straightforward and then record and post it. Nothing fancy, just something you like to play. It's been a while since we've seen you upload something (unless I've missed it). Or better still upload it for review while Neil's dance card isn't too full and he might get to reviewing it. All good.
Shel