Goal: I'd like to participate in the course challenge to practice and test my knowledge.
Steps:
action: action_type: scroll
direction: down
step_instruction: scroll down 
action: action_type: scroll
direction: down
step_instruction: scroll down 
action: action_type: scroll
direction: down
step_instruction: scroll down 
action: action_type: scroll
direction: down
step_instruction: scroll down 
action: action_type: scroll
direction: down
step_instruction: scroll down 
action: action_type: scroll
direction: down
step_instruction: scroll down 
action: action_type: scroll
direction: down
step_instruction: scroll down 
action: action_type: click
step_instruction: click on Take Course Challenge button
action: action_type: click
step_instruction: click on Let's go button