What are the fundamental steps to begin drawing Spiderman in a classic comic book style?

Begin by sketching basic geometric shapes for the head and torso to establish overall proportions and pose. Use stick figures or simple skeletons to define the action and flow, emphasizing dynamic movement. Then, flesh out the anatomy, adding muscle definition over the skeletal structure, keeping Spiderman's athletic and flexible build in mind. Finally, apply the costume details, including the intricate web patterns, ensuring they wrap around the form.