Strum your guitar with a pick or your fingers. Hold down the strings with your fingers in the appropriate shape and try to strum with your other hand. Acoustic guitar strings often have higher actions than electric guitars, so you may have to press down very hard to get a good sound. If the chord comes out muted, try holding down the strings with more force. If your string is buzzing, move your finger further away from the metal fret on your neck.
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 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.
Play Guitar! turns your Windows 8 machine into a virtual guitar. You can press and strum strings, just like a real guitar. Play Guitar! helps you learn what notes lie on the frets of the guitar. It is a very useful tool for every aspiring guitarist. Now, there are available an advanced chord editor and the possibility to use guitar capo (only for PRO users, In-app purchase) The app is easy to use and light.
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.
4.) Check the guitar’s string height by pressing down on the first, second, and third fret. You should be able to do so with minimal effort. Come to the 12th fret and press down. The distance from the top of fret to the bottom of the string should be no more than three times. If it is five times, the guitar may have a warped neck or too high of a bridge.
While there are in fact a number of songs you can play with simply the Em and Am chords, I know you're going to want a little bit more than just that. If you're still working on those first two chords, that's okay, they might take a bit to get comfortable with. Bookmark this page, work on the chords for a bit, and come back when you're ready for a few more. I'll still be here!
Now many people are going to ask about other brands, like why don’t I suggest Gibson guitars? It really is a personal taste thing, and it’ll ultimately depend on yours. Perhaps by the style of music you play or the artists you admire. For me, Fender guitars represent the best in quality and feel. Many Gibson style guitars have fatter necks, bigger frets, are heavy, and feel and sound “muddy” to me, whereas the feel of a Stratocaster– light, slender, classic– feels, plays, and looks fast.  :)
String$:  When you're done playing, wipe your strings with a cotton cloth or old T-shirt that's been treated with a small amount of light household oil such as WD-40. This cleans the strings and displaces moisture that can shorten string life. This simple process will extend string life 3 to 4 times compared to untreated strings, saving you money, and giving you more time to spend playing your guitar instead of changing strings.