The Blues scale is very similar to the minor pentatonic scale, except that it contains one extra note – the flattened fifth degree (b5). The following scale formula illustrates the fingering for the E form of the C Blues scale.
Play through it many times until you have it in your memory. Try playing it with your eyes closed and visualize each note on the fretboard as you play it. As you do this, sing the names of the scale degrees. If you use this method of practicing any new scale, you will learn it much quicker.
Although it originated in Blues, the Blues scale has been used in many styles including Rock, Metal, Funk, Hip-Hop and Jazz.