Notice how the C chord fits over this pattern. Tablature is a way of reading music other than the traditional way. You don't read notes, but you read numbers that represent the frets and strings being played. Each number is on the particular string and fret being played. Join the crowd.
Tablature offers everyone the opportunity to learn how to play music.
You must learn this material before moving any further. The illustration to the left shows the Am pentatonic scale root note fret written in tablature. Notice the A note on the Low E string 5th fret. That's the A note on the 5th fret next to the circled 5. Compare the illustration above to the one below.