Expensive compared to what? (This is a six-week instructor-led course.) If your time is more valuable than your money, you could definitely slog through a book

Expensive compared to what? (This is a six-week instructor-led course.) If your time is more valuable than your money, you could definitely slog through a book or whatever to learn this. The idea with a class is to be able to ask questions and get answers quickly, and to reinforce what you're learning in the structure of a class.