The guitar is a type of chordophone, traditionally constructed from wood and strung with either gut, nylon or steel strings and distinguished from other chordophones by its construction and tuning. The modern guitar was preceded by the gittern, the vihuela, the four-course Renaissance guitar, and the five-course baroque guitar, all of which contributed to the development of the modern six-string instrument.
The twelve-string guitar usually has steel strings, and it is widely used in folk music, blues, and rock and roll. Rather than having only six strings, the 12-string guitar has six courses made up of two strings each, like a mandolin or lute. The highest two courses are tuned in unison, while the others are tuned in octaves. The 12-string guitar is also made in electric forms. The chime-like sound of the 12-string electric guitar was the basis of jangle pop.

Jump up ^ "The first incontrovertible evidence of five-course instruments can be found in Miguel Fuenllana's Orphenica Lyre of 1554, which contains music for a vihuela de cinco ordenes. In the following year, Juan Bermudo wrote in his Declaracion de Instrumentos Musicales: 'We have seen a guitar in Spain with five courses of strings.' Bermudo later mentions in the same book that 'Guitars usually have four strings,' which implies that the five-course guitar was of comparatively recent origin, and still something of an oddity." Tom and Mary Anne Evans, Guitars: From the Renaissance to Rock. Paddington Press Ltd, 1977, p. 24.
With the massive range of options available, you'd have to spend the whole day here to go through every one. There are six and twelve-strings, models specifically made for beginners, limited edition double necks; you name it, you'll find it! For a real classic, strap on a Rickenbacker 330 electric guitar. A staple in 60's mod culture, the unique hollowbody construction, slim neck and contoured body make the Rickenbacker 330 so easy to play that it has held the status as one of the all-time greatest guitars for decades. 

If you know how to play an E major chord, then you know how to play an A minor chord—just move the chord whole shape over a string. Make sure your first finger is curled, so the open first string rings clearly. Avoid playing the open sixth string when strumming the A minor chord. There are situations when it makes sense to reverse your second and third fingers when playing the A minor chord.
Open tunings improve the intonation of major chords by reducing the error of third intervals in equal temperaments. For example, in the open-G overtones tuning G-G-D-G-B-D, the (G,B) interval is a major third, and of course each successive pair of notes on the G- and B-strings is also a major third; similarly, the open-string minor-third (B,D) induces minor thirds among all the frets of the B-D strings. The thirds of equal temperament have audible deviations from the thirds of just intonation: Equal temperaments is used in modern music because it facilitates music in all keys, while (on a piano and other instruments) just intonation provided better-sounding major-third intervals for only a subset of keys.[65] "Sonny Landreth, Keith Richards and other open-G masters often lower the second string slightly so the major third is in tune with the overtone series. This adjustment dials out the dissonance, and makes those big one-finger major-chords come alive."[66]
In major-thirds tuning, the interval between open strings is always a major third. Consequently, four frets suffice to play the chromatic scale. Chord inversion is especially simple in major-thirds tuning. Chords are inverted simply by raising one or two notes by three strings. The raised notes are played with the same finger as the original notes.[22][23] In contrast, in standard tuning, the shape of inversions depends on the involvement of the irregular major-third.[24]
Ask any veteran musician, and they'll tell you that the early stages of learning a musical instrument go by a lot smoother when you're having fun. For this reason, Guitar Center strives their hardest to ensure every guitar lesson they offer is fully-engaging and an absolute blast for everyone involved. Whether you're into the warm, natural sound of an acoustic guitar or have aspirations of blowing out ear drums on the biggest stages in town, GC's guitar lessons are designed so that players of all ages, skill levels and tastes learn the chords and scales they need to know (and want to know) in a comfortable environment.
The intensive A.A. curriculum prepares musicians to perform in any professional situation, along with learning professional development skills such as basic computer use, EPK creation, resume and bio writing, and social media as a tool for business and networking. The Associate of Arts Degree is intended to equip students with the knowledge and training needed to become professional performers in today’s music industry.