I am a member of Open Studio Pro, which also gives me access to Open Studio's content. The entire platform is super-welcoming, and calibrated to meet you where you are. Some content is free, other content you can pay for just as you need it, and other membership levels give you broader access. The content is structured both to improve overall musicians in jazz and also to help you focus on the challenges of particular instruments. So, on the content/platform questions, OS provides a ton of great content of just the type you need, when you need it. But the truly unique characteristic of the platform is the combination of the super-friendly and gifted instructors and the community. Making music is not an acquisition of data, it's an internalization of language and culture. The culture of OS is second to none. If you want to work with and be supported by musicians actually doing music with you and for you, I couldn't recommend OS more highly. It's setting the standard.