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 idea here is to work on your fretting hand dexterity, but you’ll also want to employ good picking technique. When you get good at the most basic version of this exercise you can move it around the fingerboard and practice it at different frets. You can also vary your fingering to make it more challenging, and you can change up your picking pattern.
Justin was named as one of the UK's Top 10 YouTube Celebrities on The Telegraph Newspaper  and The Independent newspaper called him "one of the most influential guitar teachers in history"  and he has received accolades from many notable guitarists, including Steve Vai, Mark Knopfler, Brian May, Richard Bennett, and Martin Taylor, among others.
The above diagram may look confusing... fear not, it's one of the most common methods of explaining notes on the guitar and is actually quite easy to read. The above represents the neck of the guitar when looked at head on. The first vertical line on the left of the diagram is the sixth string. The line to the right of that is the fifth string. And so on. The horizontal lines in the diagram represent the frets on the guitar... the space between the top horizontal line, and the one below it is the first fret. The space between that second horizontal line from the top and the one below it is the second fret. And so on. The "0" above the diagram represents the open string for the string it is positioned above. Finally, the black dots are indicators that these notes should be played.
Thinking you can use this chord buddy video to learn how to play guitar is like thinking you can use... Tiger Woods golf clubs to win the masters. Knowing which strings to target when you strum and when to switch chords is much more challenging than he makes it look. Having a professional guitarist play using the device to show how easy it is to play is deceptive. See More