How to be a total rocker on the guitar? :P?

alrighty, im a fifteen year old girl-no stalking, now:)- and ive been playing guitar for a year and a half. i learn fast but i dont take lessons. i do have piano expirience, so i know piano scales. but on guitar, i only know a simple pentatonic scale and a C major scale. I know most major, minor, and 7th chords. Bar chords are a bit tricky for me, but i know the bar chords on the E string and A string. i really dont know where to go fromhere. do i master knowing all notes? or all scales? or learn them at the same time? i want to be as good as people who can solo impressively ;) thanks!