Physics

Where to actually learn physics, from mechanics up.

Lecture notes

David Tong — Lecture Notes (Website) — a Cambridge theoretical physicist's full set of free, exceptionally clear course notes, from first-year mechanics to string theory.

• Dynamics and Relativity (Article) — first-year Newtonian mechanics and special relativity, ~160 pages with problem sheets.
• Quantum Mechanics (Article) — the standard introductory QM course.
• General Relativity (Article) — gravity as curved spacetime, worked through carefully.