Green Tea Press is a website dedicated to providing free textbooks, programming manuals, and other educational resources for students and educators. Founded by Allen Downey, a computer science professor at Olin College, the website offers a wide range of subjects, from computer science and mathematics to physics and engineering. The goal of Green Tea Press is to make high-quality educational materials accessible to everyone, with a focus on open-source and collaborative learning. In addition to textbooks, visitors can also find tutorials, problem sets, and other useful tools to enhance their learning experience.