Enoch introduces himself and explains that he will be teaching the students about risks and behaviors associated with growing up. He defines risky behaviors as actions that could endanger health or well-being. As teenagers are given more responsibility over their decisions, it is important to understand different risk behaviors and potential consequences. Enoch notes that while risky activities may provide short-term rewards, certain behaviors carry higher risks of leading to social, emotional, or physical problems. Learning decision-making skills can help assess risks and probabilities to make wiser choices.