Additionally, standard notation requires a roman numeral positioning to denote where to place your fingers.
Tablature is much more direct.
Ultimately, it's best to become well-versed in both standard notation and tablature. So visually, you're looking at the guitar strings, as represented by these lines, as upside down. If you were to tap your foot in a rhythmic manner as you count to four methodically, you have the beat of the piece. You'll notice also the line that separates the two measures that run vertically through the tablature. This line divides each measure so that you can always tell how many beats are in a measure.