Names of the Strings
The guitar has 6 strings, and each one has a different letter name. It’s important to know these string names from memory, because I’ll be referring to them a lot during this course!
Names of the strings, seen from the sound hole. 
Names of the strings, seen from the nut.
The thickest string is called the “Low E.” The reason it’s called “Low” is because the sound it produces is a lower, deeper pitch than the “High E” string, which is the thinnest string with the highest-pitch sound.