Learn Marty Friedman's spider powerchord shape

(Image credit: Future)

Guitar lessons: Marty Friedman's preferred 'spider' fingering for powerchords, uses four fingers to allows him to play faster and cleaner chord changes.

The first/third finger shape is the obvious fingering, but if you add in a second/fourth finger shape you can cross the strings and cover the fretboard swiftly.

Try alternating between the two shapes shown here, paying close attention to the fingering; as you gain confidence, try moving up and down the neck.