Click chart to see the visual rhythm animation and hear the guitar.

This tab is one bar of an A blues riff. Use your 1st finger to fret the note on the 2nd fret of the D string. To play the note on the 4th fret, use your 3d finger.  It might seem strange that you do all the work on the D string when it's an A blues riff, just keep in mind that the lowest note you are playing is the open A string.