Here are some online resources for various computer science and mathematics subjects:

Theoretical Computer Science (TCS):

1. Easy Theory (Professor): YouTube channel - https://www.youtube.com/@EasyTheory/videos

2. Abdul Bari: YouTube playlist - https://www.youtube.com/watch?v=0IAPZzGSbME&list=PLDN4rrl48X...

Computer Systems:

1. Professor Jacob Sorber: YouTube channel - https://www.youtube.com/@JacobSorber/videos

2. Martin Kleppmann: YouTube Playlist: https://www.youtube.com/playlist?list=PLeKd45zvjcDFUEv_ohr_H...

3. Ben Eater's Intro to Practical Networking: https://www.youtube.com/watch?v=XaGXPObx2Gs&list=PLowKtXNTBy...

Computer Graphics (CG):

1. Professor Samuel R. Buss:

   - Website - https://mathweb.ucsd.edu/~sbuss/CourseWeb/Math155A_2022Fall/

   - PDF - https://mathweb.ucsd.edu/~sbuss/MathCG2/SecondEdDraft.pdf

2. Professor Yusuf Sahillioğlu:

   - Website - https://user.ceng.metu.edu.tr/~ys/ceng477-gfx/

   - YouTube Playlist - https://www.youtube.com/watch?v=wec2g9VDr3c&list=PLamOUbhy_opK4q-TLKHKbH_gotjXQCxcZ

3. Pikuma (Gustavo Pezzi): YouTube channel - https://www.youtube.com/@pikuma/videos

4. Scratchapixel 3.0: Website - https://www.scratchapixel.com/

5. Computer Graphics from Scratch (Gabriel Gambetta): Website - https://gabrielgambetta.com/computer-graphics-from-scratch/i...

6. Free Ray Tracing Books (Shirley et al.): Website - https://www.realtimerendering.com/raytracing/

7. PBR: Website - https://pbr-book.org/

8. Professor Justin Solomon: YouTube channel - https://www.youtube.com/@justinmsolomon/videos

9. 3D Math Primer: Website - https://gamemath.com/book/intro.html

Digital Signal Processing (DSP):

1. Digital Audio Fundamentals: YouTube playlist - https://www.youtube.com/playlist?list=PLbqhA-NKGP6B6V_AiS-jb...

Computer Vision (CV):

1. First Principles of Computer Vision (Professor Shree Nayar): YouTube channel - https://www.youtube.com/@firstprinciplesofcomputerv3258/vide...

Mathematics:

1. The Bright Side of Mathematics: YouTube channel - https://www.youtube.com/@brightsideofmaths/videos

2. Professor Herbert Gross:

   - Calculus Revisited - Single Variable Calculus: MIT OpenCourseWare - https://ocw.mit.edu/courses/res-18-006-calculus-revisited-single-variable-calculus-fall-2010/

   - Calculus Revisited - Multivariable Calculus: MIT OpenCourseWare - https://ocw.mit.edu/courses/res-18-007-calculus-revisited-multivariable-calculus-fall-2011/

   - Calculus Revisited - Complex Variables, Differential Equations, and Linear Algebra: MIT OpenCourseWare - https://ocw.mit.edu/courses/res-18-008-calculus-revisited-complex-variables-differential-equations-and-linear-algebra-fall-2011/

3. Immersive Math: Website - http://immersivemath.com/ila/index.html

4. Interactive Linear Algebra: Website - https://textbooks.math.gatech.edu/ila/

5. Professor Sergei Treil: PDF Textbook - https://www.math.brown.edu/streil/papers/LADW/LADW.html