So I've been playing bass for 6 years now. I taught myself literally everything i know; i never took lessons of any sort. That being said, I have encountered several problems now that I'm trying to further myself in my playing as everything i attempt to play/learn is in formal sheet music, chords, arpeggios, scales. The only thing i ever really learned was songs, and some sense of scales in that i just played around with what sounded good. I need to learn this stuff to become a better bassist, but i cant take lessons, so what should i do?