Teacher. Teacher. Teacher. Live. Pay them for lessons. It can cut years off playing around and wondering how to do something, because they can play the examples, correct fingerings, grade the difficulty of each piece, prevent the formation of terrible habits that could take years to correct. A teacher can help alleviate tension and anxiety about playing certain passages. Their mission in life is to help students succeed in the shortest amount of time. For most new students, a 30-minute weekly lesson is a great starting point, costing on average, depending upon one’s location and the experience of the teacher, between $15 and $40. As one’s playing progresses, however, most students benefit from longer lessons, such as 45 minutes to an hour. There is no substitute for being apprenticed to a good teacher. I think aspiring students forget that being a musician is the same as learning a trade, and there's no substitute for being directly shown by someone how to correctly do something.