The Theoretical Minimum: What You Need to Know to Start Doing Physics is a popular science book by Leonard Susskind and George Hrabovsky.

[1][2][3] The Theoretical Minimum is a book and a Stanford University-based continuing-education lecture series, which became a popular YouTube-featured content.

[3] It is the first book in a series called The Theoretical Minimum, based on Stanford Continuing Studies courses taught by world renowned physicist Leonard Susskind.

The courses collectively teach everything required to gain a basic understanding of each area of modern physics, including much of the fundamental mathematics.

Lectures in the remaining two courses, on the subjects of: are available online as video recordings, or in written notes [1] Further lecture courses in the Theoretical Minimum series have been delivered by Susskind, on these subjects (or with these titles): These are also available online as video recordings.