I'm a beginner and have had 4 lessons so far. The lessons are now moving into listening to favourite songs and mapping them out myself on bass. Luckily, I have a very good ear and can do this fairly easily (well, pretty straightforward rocks songs at least!). If we continue to do this, it seems like I could save my money and do it at home because I don't really need someone to help me here. But I still need to learn other things like chords, arpeggios, etc. don't I? When can you tell you don't need lessons and need to figure things out and experiment on your own? What are the basics I should get before quitting lessons?