FACE and Ever Green Boy Dies Fast or whatever you want is for reading proper stave music, which you don't really need unless you want to get right into the whole music thing.
There are 12 different notes you can play: C, C#/Db, D, D#/Eb, E, F, F#/Gb, G, G#/Ab, A, A#/Bb and B. Each note is one semitone (which is equal to one fret) away from the notes either side of it. One tone is two semitones. # means "sharp" which means that it's a semitone higher and b is flat, which means a semitone lower. Therefore an F# for instance would be the same as Gb.
The strings are (from deepest to highest) are E, A, D, G, B, and e. So fret two on the E string would be an F#/Gb.
I hope that helped.