High school students interested in the Feynman Lectures can access them through a three-volume set and online videos. While the lectures were originally delivered to college students and involve advanced mathematics such as partial derivatives and differential equations, there are sections in the first two volumes that can be understood with high school-level math. Engaging with these lectures is encouraged, as Feynman presents complex ideas in an accessible manner, making them valuable for anyone interested in science. Additionally, the Messenger Series from 1964 is available for legal viewing online, providing further insights into Feynman's teaching style.