I've been playing the guitar for about 3 or 4 years. Everytime I pick up my guitar which is everyday I find myself playing the same things. I'm not sure exactly what else I should be doing or learning. Once in a while I'll learn something new from one of my friends but basically I keep playing the same stuff. I know power chords major and minor chords pentatonic scales major scales just recently been introduced to tapping. What else should I learn and what else should I do?