推荐一款app吧,《乐理通-五线谱乐理工具》https://itunes.apple.com/cn/app/%E4%B9%90%E7%90%86%E9%80%9A-%E4%BA%94%E7%BA%BF%E8%B0%B1%E4%B9%90%E7%90%86%E5%B7%A5%E5%85%B
记得网上有一些app,很实用。比培训班老师收费便宜多了。跟着视频学习更快!