There's an abundance of guitar information out there on the web, some good, some not. I stumbled across Justin Sandercoe's site a year ago and now tell everyone about it. The lessons are conveyed so clearly, concisely and in the most congenial way. The site is laid out logically as well so you can to go straight to your area of interest... beginner, blues, rock, folk, jazz, rhythm, fingerpicking... it's all there and more. Spend ten minutes with Justin and you'll not only play better but feel better too. From novice to know-it-all, everyone will learn something from Sandercoe.
The songs are arranged from easy beginners chords and layer up as you go thought the book. but they really work best with the website where Justin plays and teaches you how to play them then adds a few tricks and skills to advance each song too, so try watch all the songs even if you're not too interested in the song because there are gems of wisdom in them all. (I drew the line at Britney spears tho ;)

I have heard how giving you are in so many respects of music schooling and I must say that I am impressed. You remind me of the pure idealism that we had in starting Apple. If I were young, with time, I'd likely offer to join and help you in your endeavours. Keep making people happy, not just in their own learning, but in the example you set for them. 
Though this decision can be based on preference, we think the best guitar for a beginner is the acoustic guitar. Classical guitars have a wider neck, which can be hard for younger students or physically smaller individuals to handle when learning guitar chords. Meanwhile, the electric guitar is designed to be played with an amplifier, which comes at an additional cost. Acoustic guitars are simple and require little to no additional equipment, making them ideal for beginner guitarists.