Here is a compilation of links that has been useful for me at some point.
Hope they can now become useful for you, if you don't know them already

PROGRAMMING

• Premature optimization
• Idiomatic Python: EAFP versus LBYL
• Law of Demeter
• How to Think like a computer scientist
• Understanding Time complexity
• Refactoring and Design Pattern
• Hungarian Naming Convention
• Hungarian Notation
• SOLID: The First 5 Principles of Object Oriented Design

PYTHON

• PerformanceTips
• Python Time Complexity
• Python Patterns
• How Python Import Machinery Works
• (Re)Importing in python - Don't touch sys.modules
• Refactoring by Martin Fowler
• Python String Interning
• What the fuck Python
• Understand how much memory your Python object use
• The Performance Impact of Using dict() Instead of {}
• Be careful with exec and eval in Python
• Be careful with exec and eval in Python (really!)

RIGGING

• Chris Evans
• Resource for computer graphics (technical papers)

BANK OF ANIM OR OTHERS

• Mixamo (upload an obj, get an animated fbx with skeleton back)

ANATOMY

• Anatomy4Sculptors
• Anatomie 3D Lyon
• Simplification de l'anatomie
• Anatomy.app, not free, but great
• Biped anatomy for artists
• Animals skeletons

QT

• PyQt. How to shoot yourself in the foot
• Advanced Qt Programming: Model View

MATHEMATICS

• EuclideanSpace - Mathematics and Computing
• Detecting Approximate Reflection Symmetry in a Point Set using Optimization on Manifold
• Paul Bourke - Personal pages
• Scratchapixel
• Spatial Transformation Matrices
• Cem Yuksel on youtube
• Alan Wolfe

ALGORITHMS

• Path Finding
• Bezier Fitting curve

CURVES

• description of different curves (fr)
• Pomax - everything about nurbs curves (I've forked it in case this dissapears)

FACE RIG

• FACS - A Visual Guidebook

SHADING

• Nicolas Bonnel - Cours donne a Central Lyon (FR)
• ShaderToy (Inigo Quillez, shading creation website)

TOOLS

• Paletton
• Regex Cheat Sheet
• pdf.io
• Desmos - Graphing calculator
• Debuggex - Regular Expression Visualizer

PSYCHOLOGY

• Broken Window Theory

BLOGS

• Je suis un dev
• skwi
• Joels On Software
• Jon Yablonski (UX Designer)
• Hackernoon

ARTICLES

• super() function in python raises a TypeError
• When calling super() in a derived class, can I pass in self.class?
• The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!)
• Egoless Programming
• Deep Exploration Into Python: Let's Review The Dict Module
• Python Mutable Defaults Are The Source of All Evil
• Laws Of UX