I'm not exactly new at playing bass, and I get by. But I don't know what I don't know and need some direction. When I was in High School and college I was a drummer/percussionist. I did learn a bit of theory in college, but playing was drums, tymoani, the occasional xylophone. Then after I settled down a bit I started teaching myself guitar, and I do ok at that. A few years ago I started playing bass, and it clicked. The perfect synthesis of guitar and drums. My sweet spot. So I get by, and I can play what I play. I even read, if slowly. So roots root-5th, some scales, I'm there. But I don't know if my technique is good or horrible. And I don't know how to go to the next level. Or even go back and learn what I know the right way. What advice do you have for me?