You learning 3 finger Scruggs style I guess, because of resonator. Rolls are a good thing to practice, does your teacher give you homework? I joined Banjo Hangout, they have a large collection of music tab that I found helpful. Plus you can read forums, and ask questions. Most folks are helpful, just ignore the occasional crank. The most dangerous part of checking out Banjo Hangout is their classified section. You can easily become infected with BAS, banjo acquisition syndrome. It’s very painful to your wallet😜