Nice physics things.

 An Introduction to Spinors. 

https://arxiv.org/pdf/1312.3824.pdf

Spinor Calculus Mit Lecture Chapter 5 illustrates how a Spinor behaves like a cone on a cone.

https://ocw.mit.edu/resources/res-8-001-applied-geometric-algebra-spring-2009/lecture-notes-contents/Ch5.pdf

Teaching E&M using differential forms.

https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=1668&context=facpub

David Tong Lectures

http://www.damtp.cam.ac.uk/user/tong/teaching.html

[Highlights: First 3 Chapters on Statistical Mechanics. E&M on Magnets and Units. Spinors in Relativistic Dynamics. QFT, Popular Lecture on Newton.]  

Can You See the Lorentz–Fitzgerald Contraction?  Or: Penrose–Terrell Rotation

https://math.ucr.edu/home/baez/physics/Relativity/SR/penrose.html

How to be a good Theorist 't hooft

Also, his personal page has many interesting articles like

 STRANGE MISCONCEPTIONS OF GENERAL RELATIVITY

Youtube:

Andrew Dotson

Tibees

Sabine Hossenfelder

Alphe-0

Susskind

Penrose

Max Tegmark (on Cosmology)

 Sean Carroll 

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