Here's what I'm up to now (last updated on 2021-01-13):

- teaching
- linear algebra, using Linear Algebra Done Right by Sheldon Axler
- calculus, using Calculus by Michael Spivak's
- differential topology/geometry, using Introduction to Manifolds by Loring W. Tu
- group theory, using Abstract Algebra by David Dummit & Richard Foote
- category theory, using Category Theory by Steve Awodey

- watching
- Lectures on Geometrical Anatomy of Theoretical Physics, a lecture series on geometry in physics by Frederic Schuller
- Introduction to Renormalization, a lecture series by Simon Dideo

- reading
- Functional Analysis by Peter D. Lax
- Gauge Fields, Knots and Gravity by John Baez & Javier P. Muniain
- A First Look at Rigorous Probability Theory by Jeffrey S. Rosenthal
- The Constitution of Phenomenal Consciousness: Toward a Science and Theory edited by Steven M. Miller

I got the idea for a "now page" from Jakob Schwichtenberg, who got it from Derek Sivers.