Some useful sites
[A] Classical Mechanics Resources
1) David Tong | Lectures on Classical Dynamics
2) Prof. Balakrishnan's lectures on Classical Physics (Youtube)
3) NPTEL lectures on Theoretical Mechanics (Youtube)
4) Lecture Notes on Classical Mechanics | Daniel Arovas (PDF)
[B] Non-linear Dynamics Resources
1) Nonlinear Dynamics and Chaos - Steven Strogatz | Cornell University (Youtube)
[C] Quantum Mechanics Resources
1) MIT 8.04 Quantum Physics I | Barton Zwiebach (Youtube)
2) MIT 8.05 Quantum Physics II | Barton Zwiebach (Youtube)
3) MIT 8.06 Quantum Physics III | Barton Zwiebach (Youtube)
[D] Statistical Mechanics Resources
1) MIT 8.333 Statistical Mechanics I: Statistical Mechanics of Particles | Mehran Kardar (Youtube)
2) MIT 8.334 Statistical Mechanics II: Statistical Physics of Fields | Mehran Kardar (Youtube)
[E] Astronomy, Astrophysics, and Cosmology
1) Curious Astro | Ask an Astronomer
--> B&M solution
2) Cosmology MSc Course | IUCAA
3) Lectures on QFT | David Tong
4) Quantum Field Theory 1 | Ashoke Sen
[F] Python
2) Computational Physics PHY 354 | IISc
8) Python Programming Tutorials
9) Python - Numpy Tutorial by Justin Johnson
10) Plotly
[G] Interesting Topics/Lectures
1) Mark Newman - The Physics of Complex Systems | Youtube
2) [a] The Theoretical Minimum
[b] Theoretical Minimum courses | Youtube
[H] Miscellaneous
3) GRE Physics Problems and Solutions
4) Sohrab Ismail-Beigi’s MATLAB tutorial
[I] Coding
1) UNIX Tutorial for Beginners and Vim Tutorial (Youtube)
3) Git
4) CFD
6) Computational astrophysics by M. Zingale
8) Parallel programming with MPI in python
9) https://philip-mocz.medium.com/