Practice fretting the strings. The frets are the metal strips that run perpendicular to the strings that mark each note. To play a note, press your finger down between the metal strips, not on them. To say that you're playing the third fret means that you place your finger on the string in the gap between the second and third fret. If you hear buzzing, move your finger away from the lowest fret and closer to the higher fret. Hold the string down firmly so that it only vibrates between your finger and your strumming hand, with the tip of your finger doing the pressing.

Okay, so if the diagram had O’s across the whole thing, then you wouldn’t even have to touch the fretboard at all, you would just strum it. However, this diagram has a couple of other marks on it, and those indicate where we need to place our fingers. In this case, they are on the 2nd fret of the 4th and 5th strings. The frets are the metal parts running perpendicular to your fretboard; they are what the string makes contact with when you press your fingers down. On the diagram, the frets are the horizontal lines. So count up to the second fret, and put your fingers down just behind the fret, like in the diagram.

In order to play your favorite song, you’ll need to learn guitar chords. Use the images and instructions below to learn how to play each chord. The ChordBuddy device can be used for assistance in knowing where to place your fingers In the images the circles represent where you will be placing your fingers (I=index, M=middle finger, R=ring finger, P=pinky). The X’s represent strings that you will not be strumming while the O represents strings that will be played without any frets.
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.

I know that for me, I enjoy getting to put the spotlight on my students. I also like haveing concerts for my students to be able to demonstrate their skills for their friends and family. I also can work with students of any age, starting at about age 5 through age 100+. My experiences with teaching children gives me the ability to teach even very young students.
Position your fingers on the neck. The dots on the chords represent where you should hold down your fingers on the neck. For instance, an A major is played by holding down the string on the second fret on the 2nd, 3rd, and 4th string. An E minor is played by holding down the second fret on the 5th and 4th string. Hold the strings down until they are pressed against the neck of your guitar.[6]
So you want to learn how to play guitar do you? Well congratulations, because in my ever so humble opinion, learning to play the guitar is among the most rewarding things that you can learn. The goal of this article is not to turn you into some kind of overnight rock star, but rather to give you a bit of an introduction to the guitar, give you a couple chords to work on to get started.
One other cool thing about electric guitars– you can plug them into your computer and use a program like Apple’s Garageband as an amplifier. You can basically have 100’s of classic sounds available virtually. You can “jam” virtually with your computer and create full-on recordings on your laptop. You’ll just need a “pre-amp,” which is a device that amplifies the signal from your guitar before it sends it to your computer. I’d recommend something like the Focusrite Scarlett
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. 
In 1977, I studied at the Guatemalan National Conservatory of Music with Professors Alejandro Herrera and Rene Abularach on Classical guitar. I also studied harmony and composition with Igor de Gandarias, Juaqin Orellana and Jorge Sarmientos. In New Orleans, I took private jazz guitar courses with steve Masakowski and Hank Mackie. In 1983 I started my own Jazz band, “Acoustic Ensamble”, a band that I shared with well known international musicians like: Carlos Gomes, Fernando Perez, Bryon Sosa, Miguel Angel Villagran, Igor Sarmientos, Alfredo Caceres, Antonio Cosenza, German Giordano, Rolando Gudiel, Roberto Abularach, Auri Ruiz, M ... View Profile
I was lucky enough to meet Justin at the Guitar Institute during a summer school in 2004, and to have some private lessons with him afterwards.  He was the teacher who kickstarted my guitar career and persuaded me that I was ready to join a band.  That was 14 years ago and many dozens of gigs later.  I’m now just finishing a degree in Popular Music Performance.  Justin's online lessons are easy to follow and he has a manner about him which makes you believe that you can achieve.  Where he demonstrates songs, I have found his versions to be consistently more accurate and easy to follow than those of any other online teacher.  On this website you really will find all the skills and information you need to become an excellent musician.  Many thanks. Ian.
Age can’t hinder you – Working off of muscle memory and visual assistance, ChordBuddy is designed for players of every age. In fact, ChordBuddy is well-suited for those looking to play guitar with arthritis, offering a pain-free method of playing your favorite song. Utilizing ChordBuddy also allows you to learn the guitar on your own, eliminating the need for long guitar lessons with an instructor, which can result in prolonged joint pain.
    I'm a performing guitarist in Dallas, TX.  I play jazz more often than not, but also have experience playing many other genres (including alternative/experimental rock, blues rock, progressive rock, 19th century classical, 20th century classical, and ambient music).  Some of the musicians I have played with have ties to jazz legends like Thelonious Monk, Wayne Shorter, and Miles Davis.          I lived in Denton for 7 years while attending UNT, where I gained tremendous experience learning from and playing with others.  Additionally, while at UNT, I took class ... View Profile
As a beginner, it is best to avoid making a pawn shop, flea market, or yard sale purchase unless you are shopping with somebody who has experience in purchasing a guitar. Having never purchased a guitar, you may not know what to look for in terms of damage or guitar quality. With that being said, a local music retail shop is your best bet. You may also shop online with a reputable company, although be sure to review the business’ return policy.
Dallas Guitar Academy offers class lessons, private guitar and bass instruction, master classes, and artist clinics in North Dallas, Texas. All DGA instructors are experienced music teachers with confirmed references and degrees and/or certification in their chosen fields of expertise. Written letters of recommendation for all DGA instructors are available upon request. The DGA accreditation process means that you can be confident your DGA experience will be positive, with the highest standards of professionalism and customer courtesy.