Khan Academy is a free online educational platform founded by Salman Khan in 2008. It offers courses in mathematics, sciences, economics, art, programming, and other subjects. Materials are presented as video lessons, interactive exercises, and quizzes, which help students master topics at their own pace. The platform supports personalized learning by providing recommendations based on the user's progress. Khan Academy is available in multiple languages and is used by millions of students and teachers worldwide. This resource will be very helpful to you if you want to prepare for the SAT digital.