Pick up your guitar and look closely at the neck--specifically, the fretboard. You'll notice that there are pieces of wire. This wire separates each fret. On a traditional guitar, there are 24 frets and six strings (EADGBE).
Play the first fret of the low E string. In guitar tablature, this would be represented as E:--1--. This is because every fret is represented by a number in guitar tab. In this case, since it is the first fret, the number is 1.
Play the second fret of the A string, which would be represented as A:--2-- in guitar tablature. This is also known as the B note, because every fret on the fretboard represents a half note.
Play the third fret of the D string, also represented as D:--3-- in guitar tablature. Anytime you see the number 3 in guitar tablature, whether it's on the D string or the B string, it means you play the third fret of that string.
You'll now play a hammer-on from the fifth fret to the sixth fret of the G string. In guitar tablature, this is represented as G: --5h6--. You will commonly see things like 6p5, 7h8, 6b8. This means you'll be playing the 6th fret, pulling off to the 5th fret, doing a hammer-on from the 7th to 8th fret and then playing the 6th fret and bending the string so that it sounds as if it's from the 8th fret.
Play the high e string openly, which is e: --0-- in guitar tablature. Anytime you see 0 in guitar tablature, that means to play the note without any hands on the fretboard.
Practice this guitar tablature: E: |------------4----B: |----------3------G: |--------4-------D: |------3---------A: |----0-----------E: |--1-------------Because you read guitar tablature from left to right, you'll first be playing the 1st fret of the E string, then the A string openly, then the 3rd fret of the D string, then the 4th fret of the G string followed by the 3rd fret of the B string and finally, the 4th fret of the high e string.