https://www.euclideanspace.com/maths/algebra/clifford/geometry/transforms/motors/index.htm
https://slehar.wordpress.com/2014/03/18/clifford-algebra-a-visual-introduction/
https://slehar.wordpress.com/2014/06/26/geometric-algebra-projective-geometry/
https://slehar.wordpress.com/2014/07/24/geometric-algebra-conformal-geometry/
http://peeterjoot.com/writing/geometric-algebra-for-electrical-engineers/
https://github.com/peeterjoot/latex-notes-compilations
Notes for Lie Groups & Representations Instructor: Andrei Okounkov
http://math.columbia.edu/~hliu/classes/s17-lie-groups.pdf
http://math.columbia.edu/~mzhao/notes/
http://math.columbia.edu/~hliu/classes/
http://www.math.columbia.edu/~woit/LieGroups-2012/
Spring 2019: Geometry and Topology by Henry Liu
http://math.columbia.edu/~hliu/shp/s19-geometry-and-topology.pdf
site:https://faculty.etsu.edu/gardnerr/5357/notes/ filetype:pdf
Practical Geometric Modeling Using Geometric Algebra Motors
Conformal field theory on the plane
https://arxiv.org/abs/1406.4290
Minimal lectures on two-dimensional conformal field theory
https://arxiv.org/abs/1609.09523
Projectors, Shadows, and Conformal Blocks
https://arxiv.org/abs/1204.3894
The Minkowski and conformal superspaces
https://arxiv.org/pdf/math/0609813.pdf
The ones in https://github.com/ga-developers/ga-benchmark
https://github.com/chakravala/Grassmann.jl
https://github.com/pygae/GAlgebra.jl
https://github.com/weshoke/versor.js/
https://github.com/reloZid/algeosharp
https://github.com/JuliaDiff/DualNumbers.jl
https://github.com/PyryKuusela/GammaMaP
https://ocw.mit.edu/resources/res-8-001-applied-geometric-algebra-spring-2009/lecture-notes-contents/ (which is not actually about Clifford's Geometric Algebra)