How to organize context-sensitive help?

Question

Programming

I am writing a game for programmers. To reduce the level of entry and give the user a better idea of ​​what's what, I added contextual help in the training level. But, as it turned out, due to the large size, most users simply ignore it, as a result of which many points remain incomprehensible to them. Reducing the volume of this help will lead to the fact that the user may be confused. What is the right way to reorganize this help to make it as efficient and user-friendly as possible? Link to the game . You can use login testuser and password 111