The electric guitar, developed for popular music in the United States in the 1930s, usually has a solid, nonresonant body. The sound of its strings is both amplified and manipulated electronically by the performer. American musician and inventor Les Paul developed prototypes for the solidbody electric guitar and popularized the instrument beginning in the 1940s.
Another factor to consider are the alloys used to make the string. Acoustic strings may be phosphor bronze or an 80/20 bronze/zinc alloy, electric strings may be pure steel or a steel/nickel alloy, and the outer winding on the thicker strings may be either round wound or flat wound, which is typically used by jazz guitarists for smooth fingering with less fretting noise. Acoustic and electric strings are both now available with special super-thin coatings to protect them from sweat and corrosion. Coated strings cost more, but generally last much longer. Find out what type of string your favorite player uses, try guitars with different types of strings at your local guitar store, then try a few different sets on your guitar to see what feels and sounds best for your playing style. Major manufacturers include Ernie Ball, Martin, GHS, D'Addario, and Elixir, among others. Make sure you have a string winder to make installing the strings go faster, and some pliers with a fine wire cutter to clip the excess string from the tuning post, a well as some guitar polish - changing strings is a good time to perform some routine maintenance. Keep a clean cloth in your case to wipe down the strings after each use, along with extra bridge pins for your acoustic guitar. Regular string changes are the best way to keep your tone crisp and clear, so grab a pack and tune 'em up!
I would especially like to stress the gentle approach Justin takes with two key aspects that contributed to my development as a musician - music theory and ear training. Justin has succeeded in conveying the importance and profoundness of understanding music both theoretically and through your ears while maintaining a simple and accessible approach to them, all while sticking to what is ultimately the most important motto: 'If it sounds good, it is good'.
Unlike many string instruments which use a bow to create a sound, guitars are played by plucking or strumming the strings on the instrument, which vibrate to create a sound. Chords are played when the guitarist holds their fingers down on more than one individual string to change its length, which in turn changes the frequency of the vibration created - in other words, it creates a different note. Performers often use guitar tabs, rather than sheet music, when learning music: this acts as a kind of 'map' to teach guitarists where to put their fingers on the strings.