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.
Learn how to transition to different chords. One way to become proficient quickly is to learn how to transition between the various chords quickly. These transition periods are often the hardest for beginners to play when they are starting off. The more you practice between switching to different chords, however, the better you'll get at doing it in songs. Practice switching between open chords like G, A, E, and C. 
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!
I’m not going to walk through each of these chords individually with you, because you should be able to figure out where to put your fingers by looking at the diagrams. Once you’ve got each chord sounding nice and clear, then you can begin working on changing between the chords. You can switch between all five of these chords in any order you please and they will sound good together. There’s a reason for that, but we won’t get into that just yet.
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.
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.